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Sato Y, Shioya H, Uda Y, Asano H, Nagao Y, Kuno H, Yoshizawa F. Effects of two types of Coccomyxa sp. KJ on in vitro ruminal fermentation, methane production, and the rumen microbiota. PLoS One 2024; 19:e0308646. [PMID: 39173024 PMCID: PMC11341058 DOI: 10.1371/journal.pone.0308646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Accepted: 07/26/2024] [Indexed: 08/24/2024] Open
Abstract
Coccomyxa sp. KJ is a unicellular green microalga that accumulates abundant lipids when cultured under nitrogen-deficient conditions (KJ1) and high nitrogen levels when cultured under nitrogen-sufficient conditions (KJ2). Considering the different characteristics between KJ1 and KJ2, they are expected to have different effects on rumen fermentation. This study aimed to determine the effects of KJ1 and KJ2 on in vitro ruminal fermentation, digestibility, CH4 production, and the ruminal microbiome as corn silage substrate condition. Five treatments were evaluated: substrate only (CON) and CON + 0.5% dry matter (DM) KJ1 (KJ1_L), 1.0% DM KJ1 (KJ1_H), 0.5% DM KJ2 (KJ2_L), and 1.0% DM KJ2 (KJ2_H). DM degradability-adjusted CH4 production was inhibited by 48.4 and 40.8% in KJ2_L and KJ2_H, respectively, compared with CON. The proportion of propionate was higher in the KJ1 treatments than the CON treatment and showed further increases in the KJ2 treatments. The abundances of Megasphaera, Succiniclasticum, Selenomonas, and Ruminobacter, which are related to propionate production, were higher in KJ2_H than in CON. The results suggested that the rumen microbiome was modified by the addition of 0.5-1.0% DM KJ1 and KJ2, resulting in increased propionate and reduced CH4 production. In particular, the KJ2 treatments inhibited ruminal CH4 production more than the KJ1 treatments. These findings provide important information for inhibiting ruminal CH4 emissions, which is essential for increasing animal productivity and sustaining livestock production under future population growth.
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Affiliation(s)
- Yoshiaki Sato
- Department of Agrobiology and Bioresources, School of Agriculture, Utsunomiya University, Tochigi, Japan
| | - Honoka Shioya
- Department of Agrobiology and Bioresources, School of Agriculture, Utsunomiya University, Tochigi, Japan
| | - Yuma Uda
- University Farm, School of Agriculture, Utsunomiya University, Tochigi, Japan
| | - Hiroshi Asano
- University Farm, School of Agriculture, Utsunomiya University, Tochigi, Japan
| | - Yoshikazu Nagao
- University Farm, School of Agriculture, Utsunomiya University, Tochigi, Japan
| | | | - Fumiaki Yoshizawa
- Department of Agrobiology and Bioresources, School of Agriculture, Utsunomiya University, Tochigi, Japan
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2
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Wanapat M, Prachumchai R, Dagaew G, Matra M, Phupaboon S, Sommai S, Suriyapha C. Potential use of seaweed as a dietary supplement to mitigate enteric methane emission in ruminants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 931:173015. [PMID: 38710388 DOI: 10.1016/j.scitotenv.2024.173015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 05/03/2024] [Accepted: 05/03/2024] [Indexed: 05/08/2024]
Abstract
Seaweeds or marine algae exhibit diverse morphologies, sizes, colors, and chemical compositions, encompassing various species, including red, green, and brown seaweeds. Several seaweeds have received increased research attention and application in animal feeding investigations, particularly in ruminant livestock, due to their higher yield and convenient harvestability at present. Recent endeavors encompassing both in vitro and in vivo experiments have indicated that many seaweeds, particularly red seaweed (Asparagopsis taxiformis and Asparagopsis armata), contain plant secondary compounds, such as halogenated compounds and phlorotannins, with the potential to reduce enteric ruminal methane (CH4) emissions by up to 99 % when integrated into ruminant diets. This review provides an encompassing exploration of the existing body of knowledge concerning seaweeds and their impact on rumen fermentation, the toxicity of ruminal microbes, the health of animals, animal performance, and enteric ruminal CH4 emissions in both in vitro and in vivo settings among ruminants. By attaining a deeper comprehension of the implications of seaweed supplementation on rumen fermentation, animal productivity, and ruminal CH4 emissions, we could lay the groundwork for devising innovative strategies. These strategies aim to simultaneously achieve environmental benefits, reduce greenhouse gas emissions, enhance animal efficiency, and develop aquaculture and seaweed production systems, ensuring a high-quality and consistent supply chain. Nevertheless, future research is essential to elucidate the extent of the effect and gain insight into the mode of action.
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Affiliation(s)
- Metha Wanapat
- Tropical Feed Resources Research and Development Center (TROFREC), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Rittikeard Prachumchai
- Division of Animal Science, Faculty of Agricultural Technology, Rajamangala University of Technology Thanyaburi, Thanyaburi, Pathum Thani 12130, Thailand
| | - Gamonmas Dagaew
- Tropical Feed Resources Research and Development Center (TROFREC), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Maharach Matra
- Tropical Feed Resources Research and Development Center (TROFREC), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Srisan Phupaboon
- Tropical Feed Resources Research and Development Center (TROFREC), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Sukruthai Sommai
- Tropical Feed Resources Research and Development Center (TROFREC), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Chaichana Suriyapha
- Tropical Feed Resources Research and Development Center (TROFREC), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand.
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3
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Shinkai T, Takizawa S, Enishi O, Higuchi K, Ohmori H, Mitsumori M. Characteristics of rumen microbiota and Prevotella isolates found in high propionate and low methane-producing dairy cows. Front Microbiol 2024; 15:1404991. [PMID: 38887715 PMCID: PMC11180796 DOI: 10.3389/fmicb.2024.1404991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 05/21/2024] [Indexed: 06/20/2024] Open
Abstract
Ruminal methane production is the main sink for metabolic hydrogen generated during rumen fermentation, and is a major contributor to greenhouse gas (GHG) emission. Individual ruminants exhibit varying methane production efficiency; therefore, understanding the microbial characteristics of low-methane-emitting animals could offer opportunities for mitigating enteric methane. Here, we investigated the association between rumen fermentation and rumen microbiota, focusing on methane production, and elucidated the physiological characteristics of bacteria found in low methane-producing cows. Thirteen Holstein cows in the late lactation stage were fed a corn silage-based total mixed ration (TMR), and feed digestion, milk production, rumen fermentation products, methane production, and rumen microbial composition were examined. Cows were classified into two ruminal fermentation groups using Principal component analysis: low and high methane-producing cows (36.9 vs. 43.2 L/DMI digested) with different ruminal short chain fatty acid ratio [(C2+C4)/C3] (3.54 vs. 5.03) and dry matter (DM) digestibility (67.7% vs. 65.3%). However, there were no significant differences in dry matter intake (DMI) and milk production between both groups. Additionally, there were differences in the abundance of OTUs assigned to uncultured Prevotella sp., Succinivibrio, and other 12 bacterial phylotypes between both groups. Specifically, a previously uncultured novel Prevotella sp. with lactate-producing phenotype was detected, with higher abundance in low methane-producing cows. These findings provide evidence that Prevotella may be associated with low methane and high propionate production. However, further research is required to improve the understanding of microbial relationships and metabolic processes involved in the mitigation of enteric methane.
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Affiliation(s)
- Takumi Shinkai
- Division of Dairy Cattle Feeding and Breeding Research, Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
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4
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Ungerfeld EM, Pitta D. Review: Biological consequences of the inhibition of rumen methanogenesis. Animal 2024:101170. [PMID: 38772773 DOI: 10.1016/j.animal.2024.101170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 05/23/2024] Open
Abstract
Decreasing enteric CH4 emissions from ruminants is important for containing global warming to 1.5 °C and avoid the worst consequences of climate change. However, the objective of mitigating enteric CH4 emissions is difficult to reconcile with the forecasted increase in production of ruminant meat and milk, unless CH4 production per animal and per kilogram of animal product are decreased substantially. Chemical compound 3-nitrooxypropanol and bromoform-containing red algae Asparagopsis are currently the most potent inhibitors of rumen methanogenesis, but their average efficacy would have to be increased to mitigate enteric CH4 emissions to contain global warming to 1.5 °C, if the demand for ruminant products increases as predicted. We propose that it may be possible to enhance the efficacy of inhibitors of methanogenesis through understanding the mechanisms that cause variation in their efficacy across studies. We also propose that a more thorough understanding of the effects of inhibiting methanogenesis on rumen and postabsorptive metabolism may help improve feed efficiency and cost-effectiveness as co-benefits of the methanogenesis inhibition intervention. For enhancing efficacy, we examine herein how different inhibitors of methanogenesis affect the composition of the rumen microbial community and discuss some mechanisms that may explain dissimilar sensitivities among methanogens to different types of inhibitors. For improving feed efficiency and cost-effectiveness, we discuss the consequences of inhibiting methanogenesis on rumen fermentation, and how changes in rumen fermentation can in turn affect postabsorptive metabolism and animal performance. The objectives of this review are to identify knowledge gaps of the consequences of inhibiting methanogenesis on rumen microbiology and rumen and postabsorptive metabolism, propose research to address those knowledge gaps and discuss the implications that this research can have for the efficacy and adoption of inhibitors of methanogenesis. Depending on its outcomes, research on the microbiological, biochemical, and metabolic consequences of the inhibition of rumen methanogenesis could help the adoption of feed additives inhibitors of methanogenesis to mitigate enteric CH4 emissions from ruminants to ameliorate climate change.
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Affiliation(s)
- E M Ungerfeld
- Centro Regional de Investigación Carillanca, Instituto de Investigaciones Agropecuarias INIA, Camino Cajón a Vilcún km 10, 4880000 Vilcún, La Araucanía, Chile.
| | - D Pitta
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center, 19348 Kenneth Square, PA, United States
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5
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Roques S, Martinez-Fernandez G, Ramayo-Caldas Y, Popova M, Denman S, Meale SJ, Morgavi DP. Recent Advances in Enteric Methane Mitigation and the Long Road to Sustainable Ruminant Production. Annu Rev Anim Biosci 2024; 12:321-343. [PMID: 38079599 DOI: 10.1146/annurev-animal-021022-024931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Mitigation of methane emission, a potent greenhouse gas, is a worldwide priority to limit global warming. A substantial part of anthropogenic methane is emitted by the livestock sector, as methane is a normal product of ruminant digestion. We present the latest developments and challenges ahead of the main efficient mitigation strategies of enteric methane production in ruminants. Numerous mitigation strategies have been developed in the last decades, from dietary manipulation and breeding to targeting of methanogens, the microbes that produce methane. The most recent advances focus on specific inhibition of key enzymes involved in methanogenesis. But these inhibitors, although efficient, are not affordable and not adapted to the extensive farming systems prevalent in low- and middle-income countries. Effective global mitigation of methane emissions from livestock should be based not only on scientific progress but also on the feasibility and accessibility of mitigation strategies.
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Affiliation(s)
- Simon Roques
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR Herbivores, Saint-Genes-Champanelle, France; , ,
| | | | - Yuliaxis Ramayo-Caldas
- Animal Breeding and Genetics Program, Institute of Agrifood Research and Technology (IRTA), Torre Marimon, Caldes de Montbui, Spain;
| | - Milka Popova
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR Herbivores, Saint-Genes-Champanelle, France; , ,
| | - Stuart Denman
- Agriculture and Food, CSIRO, St. Lucia, Queensland, Australia; ,
| | - Sarah J Meale
- School of Agriculture and Food Sustainability, Faculty of Science, University of Queensland, Gatton, Queensland, Australia;
| | - Diego P Morgavi
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR Herbivores, Saint-Genes-Champanelle, France; , ,
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6
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Shinkai T, Takizawa S, Fujimori M, Mitsumori M. - Invited Review - The role of rumen microbiota in enteric methane mitigation for sustainable ruminant production. Anim Biosci 2024; 37:360-369. [PMID: 37946422 PMCID: PMC10838666 DOI: 10.5713/ab.23.0301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/13/2023] [Accepted: 10/11/2023] [Indexed: 11/12/2023] Open
Abstract
Ruminal methane production functions as the main sink for metabolic hydrogen generated through rumen fermentation and is recognized as a considerable source of greenhouse gas emissions. Methane production is a complex trait affected by dry matter intake, feed composition, rumen microbiota and their fermentation, lactation stage, host genetics, and environmental factors. Various mitigation approaches have been proposed. Because individual ruminants exhibit different methane conversion efficiencies, the microbial characteristics of low-methane-emitting animals can be essential for successful rumen manipulation and environment-friendly methane mitigation. Several bacterial species, including Sharpea, uncharacterized Succinivibrionaceae, and certain Prevotella phylotypes have been listed as key players in low-methane-emitting sheep and cows. The functional characteristics of the unclassified bacteria remain unclear, as they are yet to be cultured. Here, we review ruminal methane production and mitigation strategies, focusing on rumen fermentation and the functional role of rumen microbiota, and describe the phylogenetic and physiological characteristics of a novel Prevotella species recently isolated from low methane-emitting and high propionate-producing cows. This review may help to provide a better understanding of the ruminal digestion process and rumen function to identify holistic and environmentally friendly methane mitigation approaches for sustainable ruminant production.
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Affiliation(s)
- Takumi Shinkai
- NARO Institute of Livestock and Grassland Science, Ibaraki 305-0901,
Japan
| | - Shuhei Takizawa
- NARO Institute of Livestock and Grassland Science, Ibaraki 305-0901,
Japan
| | - Miho Fujimori
- NARO Institute of Livestock and Grassland Science, Ibaraki 305-0901,
Japan
| | - Makoto Mitsumori
- NARO Institute of Livestock and Grassland Science, Ibaraki 305-0901,
Japan
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7
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McGurrin A, Maguire J, Tiwari BK, Garcia-Vaquero M. Anti-methanogenic potential of seaweeds and seaweed-derived compounds in ruminant feed: current perspectives, risks and future prospects. J Anim Sci Biotechnol 2023; 14:145. [PMID: 38041152 PMCID: PMC10693045 DOI: 10.1186/s40104-023-00946-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 10/06/2023] [Indexed: 12/03/2023] Open
Abstract
With methane emissions from ruminant agriculture contributing 17% of total methane emissions worldwide, there is increasing urgency to develop strategies to reduce greenhouse gas emissions in this sector. One of the proposed strategies is ruminant feed intervention studies focused on the inclusion of anti-methanogenic compounds which are those capable of interacting with the rumen microbiome, reducing the capacity of ruminal microorganisms to produce methane. Recently, seaweeds have been investigated for their ability to reduce methane in ruminants in vitro and in vivo, with the greatest methane abatement reported when using the red seaweed Asparagopsis taxiformis (attributed to the bromoform content of this species). From the literature analysis in this study, levels of up to 99% reduction in ruminant methane emissions have been reported from inclusion of this seaweed in animal feed, although further in vivo and microbiome studies are required to confirm these results as other reports showed no effect on methane emission resulting from the inclusion of seaweed to basal feed. This review explores the current state of research aiming to integrate seaweeds as anti-methanogenic feed additives, as well as examining the specific bioactive compounds within seaweeds that are likely to be related to these effects. The effects of the inclusion of seaweeds on the ruminal microbiome are also reviewed, as well as the future challenges when considering the large-scale inclusion of seaweeds into ruminant diets as anti-methanogenic agents.
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Affiliation(s)
- Ailbhe McGurrin
- Section of Food and Nutrition, School of Agriculture and Food Science, University College Dublin, Dublin 4, Belfield, Ireland
- TEAGASC, Food Research Centre, Dublin 15, Ashtown, Ireland
| | - Julie Maguire
- Bantry Marine Research Station Ltd, Bantry, Co. Cork, P75 AX07, Gearhies, Ireland
| | | | - Marco Garcia-Vaquero
- Section of Food and Nutrition, School of Agriculture and Food Science, University College Dublin, Dublin 4, Belfield, Ireland.
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8
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Patra AK, Puchala R. Methane mitigation in ruminants with structural analogues and other chemical compounds targeting archaeal methanogenesis pathways. Biotechnol Adv 2023; 69:108268. [PMID: 37793598 DOI: 10.1016/j.biotechadv.2023.108268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 09/20/2023] [Accepted: 09/30/2023] [Indexed: 10/06/2023]
Abstract
Ruminants are responsible for enteric methane production contributing significantly to the anthropogenic greenhouse gases in the atmosphere. Moreover, dietary energy is lost as methane gas without being available for animal use. Therefore, many mitigation strategies aiming at interventions at animals, diet, and microbiota have been explored by researchers. Specific chemical analogues targeting the enzymes of the methanogenic pathway appear to be more effective in specifically inhibiting the growth of methane-producing archaea without hampering another microbiome, particularly, cellulolytic microbiota. The targets of methanogenesis reactions that have been mainly investigated in ruminal fluid include methyl coenzyme M reductase (halogenated sulfonate and nitrooxy compounds), corrinoid enzymes (halogenated aliphatic compounds), formate dehydrogenase (nitro compounds, e.g., nitroethane and 2-nitroethanol), and deazaflavin (F420) (pterin and statin compounds). Many other potential metabolic reaction targets in methanogenic archaea have not been evaluated properly. The analogues are specifically effective inhibitors of methanogens, but their efficacy to lower methanogenesis over time reduces due to the metabolism of the compounds by other microbiota or the development of resistance mechanisms by methanogens. In this short review, methanogen populations inhabited in the rumen, methanogenesis pathways and methane analogues, and other chemical compounds specifically targeting the metabolic reactions in the pathways and methane production in ruminants have been discussed. Although many methane inhibitors have been evaluated in lowering methane emission in ruminants, advancement in unravelling the molecular mechanisms of specific methane inhibitors targeting the metabolic pathways in methanogens is very limited.
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Affiliation(s)
- Amlan Kumar Patra
- American Institute for Goat Research, Langston University, Langston, OK 73050, USA.
| | - Ryszard Puchala
- American Institute for Goat Research, Langston University, Langston, OK 73050, USA; Applied Physiology Unit, Military Institute of Hygiene and Epidemiology, Kozielska 4, Warsaw, Poland
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9
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Thorsteinsson M, Lund P, Weisbjerg MR, Noel SJ, Schönherz AA, Hellwing ALF, Hansen HH, Nielsen MO. Enteric methane emission of dairy cows supplemented with iodoform in a dose-response study. Sci Rep 2023; 13:12797. [PMID: 37550361 PMCID: PMC10406889 DOI: 10.1038/s41598-023-38149-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 07/04/2023] [Indexed: 08/09/2023] Open
Abstract
Enteric methane (CH4) emission is one of the major greenhouse gasses originating from cattle. Iodoform has in studies been found to be a potent mitigator of rumen CH4 formation in vitro. This study aimed to quantify potential of iodoform as an anti-methanogenic feed additive for dairy cows and investigate effects on feed intake, milk production, feed digestibility, rumen microbiome, and animal health indicators. The experiment was conducted as a 4 × 4 Latin square design using four lactating rumen, duodenal, and ileal cannulated Danish Holstein dairy cows. The treatments consisted of four different doses of iodoform (1) 0 mg/day, (2) 320 mg/day, (3) 640 mg/day, and (4) 800 mg/day. Iodoform was supplemented intra-ruminally twice daily. Each period consisted of 7-days of adaptation, 3-days of digesta and blood sampling, and 4-days of gas exchange measurements using respiration chambers. Milk yield and dry matter intake (DMI) were recorded daily. Rumen samples were collected for microbial analyses and investigated for fermentation parameters. Blood was sampled and analyzed for metabolic and health status indicators. Dry matter intake and milk production decreased linearly by maximum of 48% and 33%, respectively, with increasing dose. Methane yield (g CH4/kg DMI) decreased by maximum of 66%, while up to 125-fold increases were observed in hydrogen yield (g H2/kg DMI) with increasing dose of iodoform. Total tract digestibility of DM, OM, CP, C, NDF, and starch were unaffected by treatments, but large shifts, except for NDF, were observed for ruminal to small intestinal digestion of the nutrients. Some indicators of disturbed rumen microbial activity and fermentation dynamics were observed with increasing dose, but total number of ruminal bacteria was unaffected by treatment. Serum and plasma biomarkers did not indicate negative effects of iodoform on cow health. In conclusion, iodoform was a potent mitigator of CH4 emission. However, DMI and milk production were negatively affected and associated with indications of depressed ruminal fermentation. Future studies might reveal if depression of milk yield and feed intake can be avoided if iodoform is continuously administered by mixing it into a total mixed ration.
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Affiliation(s)
- Mirka Thorsteinsson
- Department of Animal and Veterinary Sciences, AU Viborg - Research Centre Foulum, Aarhus University, 8830, Tjele, Denmark.
- iCLIMATE - Interdisciplinary Centre for Climate Change, Aarhus University, 8830, Tjele, Denmark.
- CBIO - Centre for Circular Bioeconomy, Aarhus University, 8830, Tjele, Denmark.
| | - Peter Lund
- Department of Animal and Veterinary Sciences, AU Viborg - Research Centre Foulum, Aarhus University, 8830, Tjele, Denmark
- iCLIMATE - Interdisciplinary Centre for Climate Change, Aarhus University, 8830, Tjele, Denmark
- CBIO - Centre for Circular Bioeconomy, Aarhus University, 8830, Tjele, Denmark
| | - Martin Riis Weisbjerg
- Department of Animal and Veterinary Sciences, AU Viborg - Research Centre Foulum, Aarhus University, 8830, Tjele, Denmark
- iCLIMATE - Interdisciplinary Centre for Climate Change, Aarhus University, 8830, Tjele, Denmark
- CBIO - Centre for Circular Bioeconomy, Aarhus University, 8830, Tjele, Denmark
| | - Samantha Joan Noel
- Department of Animal and Veterinary Sciences, AU Viborg - Research Centre Foulum, Aarhus University, 8830, Tjele, Denmark
- iCLIMATE - Interdisciplinary Centre for Climate Change, Aarhus University, 8830, Tjele, Denmark
- CBIO - Centre for Circular Bioeconomy, Aarhus University, 8830, Tjele, Denmark
| | - Anna Amanda Schönherz
- Department of Animal and Veterinary Sciences, AU Viborg - Research Centre Foulum, Aarhus University, 8830, Tjele, Denmark
- iCLIMATE - Interdisciplinary Centre for Climate Change, Aarhus University, 8830, Tjele, Denmark
- CBIO - Centre for Circular Bioeconomy, Aarhus University, 8830, Tjele, Denmark
| | - Anne Louise Frydendahl Hellwing
- Department of Animal and Veterinary Sciences, AU Viborg - Research Centre Foulum, Aarhus University, 8830, Tjele, Denmark
- iCLIMATE - Interdisciplinary Centre for Climate Change, Aarhus University, 8830, Tjele, Denmark
- CBIO - Centre for Circular Bioeconomy, Aarhus University, 8830, Tjele, Denmark
| | - Hanne Helene Hansen
- Department of Veterinary and Animal Sciences, University of Copenhagen, 1870, Frederiksberg, Denmark
| | - Mette Olaf Nielsen
- Department of Animal and Veterinary Sciences, AU Viborg - Research Centre Foulum, Aarhus University, 8830, Tjele, Denmark
- iCLIMATE - Interdisciplinary Centre for Climate Change, Aarhus University, 8830, Tjele, Denmark
- CBIO - Centre for Circular Bioeconomy, Aarhus University, 8830, Tjele, Denmark
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10
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Morgavi DP, Cantalapiedra-Hijar G, Eugène M, Martin C, Noziere P, Popova M, Ortigues-Marty I, Muñoz-Tamayo R, Ungerfeld EM. Review: Reducing enteric methane emissions improves energy metabolism in livestock: is the tenet right? Animal 2023; 17 Suppl 3:100830. [PMID: 37263815 DOI: 10.1016/j.animal.2023.100830] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 12/21/2022] [Accepted: 12/30/2022] [Indexed: 06/03/2023] Open
Abstract
The production of enteric methane in the gastrointestinal tract of livestock is considered as an energy loss in the equations for estimating energy metabolism in feeding systems. Therefore, the spared energy resulting from specific inhibition of methane emissions should be re-equilibrated with other factors of the equation. And, it is commonly assumed that net energy from feeds increases, thus benefitting production functions, particularly in ruminants due to the important production of methane in the rumen. Notwithstanding, we confirm in this work that inhibition of emissions in ruminants does not transpose into consistent improvements in production. Theoretical calculations of energy flows using experimental data show that the expected improvement in net energy for production is small and difficult to detect under the prevailing, moderate inhibition of methane production (≈25%) obtained using feed additives inhibiting methanogenesis. Importantly, the calculation of energy partitioning using canonical models might not be adequate when methanogenesis is inhibited. There is a lack of information on various parameters that play a role in energy partitioning and that may be affected under provoked abatement of methane. The formula used to calculate heat production based on respiratory exchanges should be validated when methanogenesis is inhibited. Also, a better understanding is needed of the effects of inhibition on fermentation products, fermentation heat, and microbial biomass. Inhibition induces the accumulation of H2, the main substrate used to produce methane, that has no energetic value for the host, and it is not extensively used by the majority of rumen microbes. Currently, the fate of this excess of H2 and its consequences on the microbiota and the host are not well known. All this additional information will provide a better account of energy transactions in ruminants when enteric methanogenesis is inhibited. Based on the available information, it is concluded that the claim that enteric methane inhibition will translate into more feed-efficient animals is not warranted.
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Affiliation(s)
- D P Morgavi
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR Herbivores, F-63122 Saint-Genes-Champanelle, France.
| | - G Cantalapiedra-Hijar
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR Herbivores, F-63122 Saint-Genes-Champanelle, France
| | - M Eugène
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR Herbivores, F-63122 Saint-Genes-Champanelle, France
| | - C Martin
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR Herbivores, F-63122 Saint-Genes-Champanelle, France
| | - P Noziere
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR Herbivores, F-63122 Saint-Genes-Champanelle, France
| | - M Popova
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR Herbivores, F-63122 Saint-Genes-Champanelle, France
| | - I Ortigues-Marty
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR Herbivores, F-63122 Saint-Genes-Champanelle, France
| | - R Muñoz-Tamayo
- Université Paris-Saclay, INRAE, AgroParisTech, UMR Modélisation Systémique Appliquée aux Ruminants, 91120 Palaiseau, France
| | - E M Ungerfeld
- Centro Regional de Investigación Carillanca, Instituto de Investigaciones Agropecuarias INIA, Temuco 4880000, Chile
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11
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Wang K, Xiong B, Zhao X. Could propionate formation be used to reduce enteric methane emission in ruminants? THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 855:158867. [PMID: 36122712 DOI: 10.1016/j.scitotenv.2022.158867] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/11/2022] [Accepted: 09/15/2022] [Indexed: 06/15/2023]
Abstract
To meet the increasing demand for meat and milk, the livestock industry has to increase its production. Without improving its efficiency, increased livestock, especially ruminant animals, will worsen the environmental damage, mainly from enteric CH4 emission. Enteric CH4 emission from ruminants not only exacerbates the global greenhouse effect but also reduces feed energy efficiency for the animals. The rumen disposes of metabolic hydrogen ([H]) primarily through methanogenesis and propionate formation. Theoretically, redirecting [H] from methanogenesis to propionate formation to reduce CH4 production could be a promising method for reducing greenhouse gas emission from ruminants, and may also increase animal productivity. However, the feasibility of such a shifting has never been synthetically discussed. Thus, the objectives of this review are to provide a brief overview of the biochemical pathways for disposal of H2 in the rumen, to analyze current feeding strategies that potentially promote propionate formation and their effects on methanogenesis, and to deliberate the challenge and opportunity associated with propionate formation as a sink to store the [H] shifting from enteric CH4 inhibition.
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Affiliation(s)
- Kun Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, Quebec H9X 3V9, Canada
| | - Benhai Xiong
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Xin Zhao
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, Quebec H9X 3V9, Canada.
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12
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Takizawa S, Shinkai T, Saito K, Fukumoto N, Arai Y, Hirai T, Maruyama M, Takeda M. Effect of rumen microbiota transfaunation on the growth, rumen fermentation, and microbial community of early separated Japanese Black cattle. Anim Sci J 2023; 94:e13876. [PMID: 37818871 DOI: 10.1111/asj.13876] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 08/20/2023] [Accepted: 09/07/2023] [Indexed: 10/13/2023]
Abstract
This study aimed to investigate the effect of rumen microbiota transfaunation on the growth, rumen fermentation, and the microbial community of Japanese Black cattle that were separated early from their dams. Here, 24 calves were separated from their dams immediately after calving, 12 of which were transfaunated via inoculation with rumen fluid from adult cattle at the age of 2 months while the remaining 12 were kept unfaunated (not-inoculated). Feed efficiency monitoring was performed during 7-10 months of age. Body weight and feed intake were not significantly different between the transfaunated and unfaunated cattle. Transfaunation increased the relative levels of acetate and butyrate but decreased those of propionate, which increased the non-glucogenic/glucogenic short-chain fatty acid ratio. Microbial 16S, 18S, and ITS ribosomal RNA gene amplicon analysis showed that rumen microbial diversity and composition differed between transfaunated and unfaunated cattle; transfaunation increased the abundance of acetate- and butyrate-producing bacteria, and decreased the abundance of bacterial genera associated with propionate production. Transfaunation also increased the abundance of Methanomassiliicoccaceae_group10 (1.94% vs. 0.05%) and Neocallimastix (27.1% vs. 6.8%) but decreased that of Methanomicrobium (<0.01% vs. 0.06%). Our findings indicate that rumen microbiota transfaunation shifts rumen fermentation toward acetate and butyrate production through a change in the rumen microbial composition in Japanese Black cattle.
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Affiliation(s)
- Shuhei Takizawa
- National Agriculture and Food Research Organization, Institute of Livestock and Grassland Science, Tsukuba, Japan
| | - Takumi Shinkai
- National Agriculture and Food Research Organization, Institute of Livestock and Grassland Science, Tsukuba, Japan
| | - Kunihiko Saito
- National Livestock Breeding Center Tokachi Station, Otofuke, Japan
| | - Natsuko Fukumoto
- National Livestock Breeding Center Tokachi Station, Otofuke, Japan
| | - Yukari Arai
- National Livestock Breeding Center Tokachi Station, Otofuke, Japan
- Ministry of Agriculture, Forestry and Fisheries, Tokyo, Japan
| | - Tomokazu Hirai
- National Livestock Breeding Center Tokachi Station, Otofuke, Japan
| | | | - Masayuki Takeda
- National Livestock Breeding Center Tokachi Station, Otofuke, Japan
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13
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Betancur-Murillo CL, Aguilar-Marín SB, Jovel J. Prevotella: A Key Player in Ruminal Metabolism. Microorganisms 2022; 11:microorganisms11010001. [PMID: 36677293 PMCID: PMC9866204 DOI: 10.3390/microorganisms11010001] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/15/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022] Open
Abstract
Ruminants are foregut fermenters that have the remarkable ability of converting plant polymers that are indigestible to humans into assimilable comestibles like meat and milk, which are cornerstones of human nutrition. Ruminants establish a symbiotic relationship with their microbiome, and the latter is the workhorse of carbohydrate fermentation. On the other hand, during carbohydrate fermentation, synthesis of propionate sequesters H, thus reducing its availability for the ultimate production of methane (CH4) by methanogenic archaea. Biochemically, methane is the simplest alkane and represents a downturn in energetic efficiency in ruminants; environmentally, it constitutes a potent greenhouse gas that negatively affects climate change. Prevotella is a very versatile microbe capable of processing a wide range of proteins and polysaccharides, and one of its fermentation products is propionate, a trait that appears conspicuous in P. ruminicola strain 23. Since propionate, but not acetate or butyrate, constitutes an H sink, propionate-producing microbes have the potential to reduce methane production. Accordingly, numerous studies suggest that members of the genus Prevotella have the ability to divert the hydrogen flow in glycolysis away from methanogenesis and in favor of propionic acid production. Intended for a broad audience in microbiology, our review summarizes the biochemistry of carbohydrate fermentation and subsequently discusses the evidence supporting the essential role of Prevotella in lignocellulose processing and its association with reduced methane emissions. We hope this article will serve as an introduction to novice Prevotella researchers and as an update to others more conversant with the topic.
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Affiliation(s)
- Claudia Lorena Betancur-Murillo
- Escuela de Ciencias Básicas, Tecnología e Ingeniería, Universidad Nacional Abierta y a Distancia, UNAD, Bogotá 111511, Colombia
| | | | - Juan Jovel
- Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Dr NW, Calgary, AB T2N 4Z6, Canada
- Correspondence:
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14
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Alvarez C, Os Andersen T, Sømliøy Eikanger K, Wøyen Hamfjord I, Niu P, Weiby KV, Årvik L, Dörsch P, Hagen LH, Pope PB, Forberg DK, Kolsrud Hustoft H, Schwarm A, Kidane A. Methane inhibition by Asparagopsis taxiformis with rumen fluid collected from ventral and central location – a pilot study. ACTA AGR SCAND A-AN 2022. [DOI: 10.1080/09064702.2022.2152196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Clementina Alvarez
- Faculty of Biosciences, Norwegian University of Life Sciences, Ås, Norway
- TineSA, Oslo, Norway
| | - Thea Os Andersen
- Faculty of Biosciences, Norwegian University of Life Sciences, Ås, Norway
| | | | - Ida Wøyen Hamfjord
- Faculty of Biosciences, Norwegian University of Life Sciences, Ås, Norway
| | - Puchun Niu
- Faculty of Biosciences, Norwegian University of Life Sciences, Ås, Norway
| | - Kim Viggo Weiby
- Faculty of Biosciences, Norwegian University of Life Sciences, Ås, Norway
- TineSA, Oslo, Norway
| | - Linda Årvik
- Faculty of Biosciences, Norwegian University of Life Sciences, Ås, Norway
| | - Peter Dörsch
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, Ås, Norway
| | - Live Heldal Hagen
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway
| | - Phillip B. Pope
- Faculty of Biosciences, Norwegian University of Life Sciences, Ås, Norway
| | | | | | - Angela Schwarm
- Faculty of Biosciences, Norwegian University of Life Sciences, Ås, Norway
| | - Alemayehu Kidane
- Faculty of Biosciences, Norwegian University of Life Sciences, Ås, Norway
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15
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Huang H, Lechniak D, Szumacher-Strabel M, Patra AK, Kozłowska M, Kolodziejski P, Gao M, Ślusarczyk S, Petrič D, Cieslak A. The effect of ensiled paulownia leaves in a high-forage diet on ruminal fermentation, methane production, fatty acid composition, and milk production performance of dairy cows. J Anim Sci Biotechnol 2022; 13:104. [PMID: 35953848 PMCID: PMC9373331 DOI: 10.1186/s40104-022-00745-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 06/09/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The use of industrial by-products rich in bioactive compounds as animal feeds can reduce greenhouse gas production. Paulownia leaves silage (PLS) was supplemented to dairy cows' diet and evaluated in vitro (Exp. 1; Rusitec) and in vivo (Exp. 2, cannulated lactating dairy cows and Exp. 3, non-cannulated lactating dairy cows). The study investigated the PLS effect on ruminal fermentation, microbial populations, methane production and concentration, dry matter intake (DMI), and fatty acid (FA) proportions in ruminal fluid and milk. RESULTS Several variables of the ruminal fluid were changed in response to the inclusion of PLS. In Exp. 1, the pH increased linearly and quadratically, whereas ammonia and total volatile fatty acid (VFA) concentrations increased linearly and cubically. A linear, quadratic, and cubical decrease in methane concentration was observed with increasing dose of the PLS. Exp. 2 revealed an increase in ruminal pH and ammonia concentrations, but no changes in total VFA concentration. Inclusion of PLS increased ruminal propionate (at 3 h and 6 h after feeding), isovalerate, and valerate concentrations. Addition of PLS also affected several populations of the analyzed microorganisms. The abundances of protozoa and bacteria were increased, whereas the abundance of archaea were decreased by PLS. Methane production decreased by 11% and 14% in PLS-fed cows compared to the control in Exp. 2 and 3, respectively. Exp. 3 revealed a reduction in the milk protein and lactose yield in the PLS-fed cows, but no effect on DMI and energy corrected milk yield. Also, the PLS diet affected the ruminal biohydrogenation process with an increased proportions of C18:3 cis-9 cis-12 cis-15, conjugated linoleic acid, C18:1 trans-11 FA, polyunsaturated fatty acids (PUFA), and reduced n6/n3 ratio and saturated fatty acids (SFA) proportion in milk. The relative transcript abundances of the 5 of 6 analyzed genes regulating FA metabolism increased. CONCLUSIONS The dietary PLS replacing the alfalfa silage at 60 g/kg diet can reduce the methane emission and improve milk quality with greater proportions of PUFA, including conjugated linoleic acid, and C18:1 trans-11 along with reduction of SFA. Graphical abstract of the experimental roadmap.
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Affiliation(s)
- Haihao Huang
- Department of Animal Nutrition, Poznań University of Life Sciences, Wołyńska 33, 60-637, Poznań, Poland
| | - Dorota Lechniak
- Department of Genetics and Animal Breeding, Poznań University of Life Sciences, Wolynska 33, Poznań, 60-637, Poland
| | | | - Amlan Kumar Patra
- Department of Animal Nutrition, West Bengal University of Animal and Fishery Sciences, 37 K. B. Sarani, Kolkata, India
| | - Martyna Kozłowska
- Department of Animal Nutrition, Poznań University of Life Sciences, Wołyńska 33, 60-637, Poznań, Poland.,Department of Animal Nutrition, West Bengal University of Animal and Fishery Sciences, 37 K. B. Sarani, Kolkata, India.,Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Postępu 36A, 05-552, Magdalenka, Warsaw, Poland
| | - Pawel Kolodziejski
- Department of Animal Physiology, Biochemistry and Biostructure, Poznan University of Life Sciences, Wolynska 35, Poznan, 60-637, Poland
| | - Min Gao
- Department of Animal Nutrition, Poznań University of Life Sciences, Wołyńska 33, 60-637, Poznań, Poland
| | - Sylwester Ślusarczyk
- Department of Pharmaceutical Biology and Botanic Garden of Medicinal Plants, Wrocław Medical University, Wrocław, 50-556, Poland
| | - Daniel Petrič
- Institute of Animal Physiology, Centre of Biosciences of Slovak Academy of Sciences, Šoltésovej 4-6, 040-01, Košice, Slovak Republic
| | - Adam Cieslak
- Department of Animal Nutrition, Poznań University of Life Sciences, Wołyńska 33, 60-637, Poznań, Poland. .,Department of Animal Nutrition, Faculty of Veterinary Medicine and Animal Science, Poznań University of Life Sciences, Poznań, 60-637, Poland.
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16
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Künzel S, Yergaliyev T, Wild KJ, Philippi H, Petursdottir AH, Gunnlaugsdottir H, Reynolds CK, Humphries DJ, Camarinha-Silva A, Rodehutscord M. Methane Reduction Potential of Brown Seaweeds and Their Influence on Nutrient Degradation and Microbiota Composition in a Rumen Simulation Technique. Front Microbiol 2022; 13:889618. [PMID: 35836418 PMCID: PMC9273974 DOI: 10.3389/fmicb.2022.889618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/17/2022] [Indexed: 12/30/2022] Open
Abstract
This study aimed to investigate the effects of two brown Icelandic seaweed samples (Ascophyllum nodosum and Fucus vesiculosus) on in vitro methane production, nutrient degradation, and microbiota composition. A total mixed ration (TMR) was incubated alone as control or together with each seaweed at two inclusion levels (2.5 and 5.0% on a dry matter basis) in a long-term rumen simulation technique (Rusitec) experiment. The incubation period lasted 14 days, with 7 days of adaptation and sampling. The methane concentration of total gas produced was decreased at the 5% inclusion level of A. nodosum and F. vesiculosus by 8.9 and 3.6%, respectively (P < 0.001). The total gas production was reduced by all seaweeds, with a greater reduction for the 5% seaweed inclusion level (P < 0.001). Feed nutrient degradation and the production of volatile fatty acids and ammonia in the effluent were also reduced, mostly with a bigger effect for the 5% inclusion level of both seaweeds, indicating a reduced overall fermentation (all P ≤ 0.001). Microbiota composition was analyzed by sequencing 16S rRNA amplicons from the rumen content of the donor cows, fermenter liquid and effluent at days 7 and 13, and feed residues at day 13. Relative abundances of the most abundant methanogens varied between the rumen fluid used for the start of incubation and the samples taken at day 7, as well as between days 7 and 13 in both fermenter liquid and effluent (P < 0.05). According to the differential abundance analysis with q2-ALDEx2, in effluent and fermenter liquid samples, archaeal and bacterial amplicon sequence variants were separated into two groups (P < 0.05). One was more abundant in samples taken from the treatment without seaweed supplementation, while the other one prevailed in seaweed supplemented treatments. This group also showed a dose-dependent response to seaweed inclusion, with a greater number of differentially abundant members between a 5% inclusion level and unsupplemented samples than between a 2.5% inclusion level and TMR. Although supplementation of both seaweeds at a 5% inclusion level decreased methane concentration in the total gas due to the high iodine content in the seaweeds tested, the application of practical feeding should be done with caution.
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Affiliation(s)
- Susanne Künzel
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
- Hohenheim Center for Livestock Microbiome Research, University of Hohenheim, Stuttgart, Germany
| | - Timur Yergaliyev
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
- Hohenheim Center for Livestock Microbiome Research, University of Hohenheim, Stuttgart, Germany
| | - Katharina J. Wild
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
- Hohenheim Center for Livestock Microbiome Research, University of Hohenheim, Stuttgart, Germany
| | - Hanna Philippi
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
- Hohenheim Center for Livestock Microbiome Research, University of Hohenheim, Stuttgart, Germany
| | | | - Helga Gunnlaugsdottir
- Matís, Reykjavík, Iceland
- Faculty of Food Science and Nutrition, School of Health Sciences, University of Iceland, Reykjavík, Iceland
| | - Chris K. Reynolds
- School of Agriculture, Policy and Development, University of Reading, Reading, United Kingdom
| | - David J. Humphries
- School of Agriculture, Policy and Development, University of Reading, Reading, United Kingdom
| | - Amélia Camarinha-Silva
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
- Hohenheim Center for Livestock Microbiome Research, University of Hohenheim, Stuttgart, Germany
| | - Markus Rodehutscord
- Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
- Hohenheim Center for Livestock Microbiome Research, University of Hohenheim, Stuttgart, Germany
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17
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Garcia F, Muñoz C, Martínez-Ferrer J, Urrutia NL, Martínez ED, Saldivia M, Immig I, Kindermann M, Walker N, Ungerfeld EM. 3-Nitrooxypropanol substantially decreased enteric methane emissions of dairy cows fed true protein- or urea-containing diets. Heliyon 2022; 8:e09738. [PMID: 35770150 PMCID: PMC9234604 DOI: 10.1016/j.heliyon.2022.e09738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/23/2022] [Accepted: 06/13/2022] [Indexed: 11/07/2022] Open
Abstract
Methane is a potent but short-lived greenhouse gas targeted for short-term amelioration of climate change, with enteric methane emitted by ruminants being the most important anthropogenic source of methane. Ruminant production also releases nitrogen to the environment, resulting in groundwater pollution and emissions of greenhouse gas nitrous oxide. We hypothesized that inhibiting rumen methanogenesis in dairy cows with chemical inhibitor 3-nitrooxypropanol (3-NOP) would redirect metabolic hydrogen towards synthesis of microbial amino acids. Our objective was to investigate the effects of 3-NOP on methane emissions, rumen fermentation and nitrogen metabolism of dairy cows fed true protein or urea as nitrogen sources. Eight ruminally-cannulated cows were fed a plant protein or a urea-containing diet during a Control experimental period followed by a methanogenesis inhibition period with 3-NOP supplementation. All diets were unintentionally deficient in nitrogen, and diets supplemented with 3-NOP had higher fiber than diets fed in the Control period. Higher dietary fiber content in the 3-NOP period would be expected to cause higher methane emissions; however, methane emissions adjusted by dry matter and digested organic matter intake were 54% lower with 3-NOP supplementation. Also, despite of the more fibrous diet, 3-NOP shifted rumen fermentation from acetate to propionate. The post-feeding rumen ammonium peak was substantially lower in the 3-NOP period, although that did not translate into greater rumen microbial protein production nor lesser nitrogen excretion in urine. Presumably, because all diets resulted in low rumen ammonium, and intake of digestible organic matter was lower in the 3-NOP period compared to the Control period, the synthesis of microbial amino acids was limited by nitrogen and energy, precluding the evaluation of our hypothesis. Supplementation with 3-NOP was highly effective at decreasing methane emissions with a lower quality diet, both with true protein and urea as nitrogen sources.
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Affiliation(s)
- Florencia Garcia
- Universidad Nacional de Córdoba, Facultad de Ciencias Agropecuarias, Departamento de Producción Animal, Ing Agr. Félix Aldo Marrone 746, Córdoba Capital, Córdoba, 5001, Argentina
| | - Camila Muñoz
- Instituto de Investigaciones Agropecuarias, Centro Regional de Investigación Remehue, Ruta 5 km 8 norte, Osorno, Los Lagos, 5290000, Chile
| | - Jorge Martínez-Ferrer
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Manfredi, Ruta Nacional nº9 km 636, Manfredi, Córdoba, 5988, Argentina
| | - Natalie L Urrutia
- Instituto de Investigaciones Agropecuarias, Centro Regional de Investigación Remehue, Ruta 5 km 8 norte, Osorno, Los Lagos, 5290000, Chile
| | - Emilio D Martínez
- Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Campus Isla Teja S/N, Valdivia, 5090000, Chile
| | - Marcelo Saldivia
- Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Campus Isla Teja S/N, Valdivia, 5090000, Chile
| | - Irmgard Immig
- DSM Nutritional Products, Animal Nutrition and Health, Wurmisweg 576, Kaiseraugst, 4303, Switzerland
| | - Maik Kindermann
- DSM Nutritional Products, Animal Nutrition and Health, Wurmisweg 576, Kaiseraugst, 4303, Switzerland
| | - Nicola Walker
- DSM Nutritional Products, Animal Nutrition and Health, Wurmisweg 576, Kaiseraugst, 4303, Switzerland
| | - Emilio M Ungerfeld
- Instituto de Investigaciones Agropecuarias, Centro Regional de Investigación Carillanca, Camino Cajón - Vilcún km 10, Temuco, La Araucanía, 4880000, Chile
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18
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Glasson CR, Kinley RD, de Nys R, King N, Adams SL, Packer MA, Svenson J, Eason CT, Magnusson M. Benefits and risks of including the bromoform containing seaweed Asparagopsis in feed for the reduction of methane production from ruminants. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102673] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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19
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Tseten T, Sanjorjo RA, Kwon M, Kim SW. Strategies to Mitigate Enteric Methane Emissions from Ruminant Animals. J Microbiol Biotechnol 2022; 32:269-277. [PMID: 35283433 PMCID: PMC9628856 DOI: 10.4014/jmb.2202.02019] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/02/2022] [Accepted: 03/03/2022] [Indexed: 12/15/2022]
Abstract
Human activities account for approximately two-thirds of global methane emissions, wherein the livestock sector is the single massive methane emitter. Methane is a potent greenhouse gas of over 21 times the warming effect of carbon dioxide. In the rumen, methanogens produce methane as a by-product of anaerobic fermentation. Methane released from ruminants is considered as a loss of feed energy that could otherwise be used for productivity. Economic progress and growing population will inflate meat and milk product demands, causing elevated methane emissions from this sector. In this review, diverse approaches from feed manipulation to the supplementation of organic and inorganic feed additives and direct-fed microbial in mitigating enteric methane emissions from ruminant livestock are summarized. These approaches directly or indirectly alter the rumen microbial structure thereby reducing rumen methanogenesis. Though many inorganic feed additives have remarkably reduced methane emissions from ruminants, their usage as feed additives remains unappealing because of health and safety concerns. Hence, feed additives sourced from biological materials such as direct-fed microbials have emerged as a promising technique in mitigating enteric methane emissions.
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Affiliation(s)
- Tenzin Tseten
- Division of Applied Life Science (BK21 Four), ABC-RLRC, PMBBRC, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Rey Anthony Sanjorjo
- Division of Applied Life Science (BK21 Four), ABC-RLRC, PMBBRC, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Moonhyuk Kwon
- Division of Applied Life Science (BK21 Four), ABC-RLRC, PMBBRC, Gyeongsang National University, Jinju 52828, Republic of Korea,
M. Kwon Phone: +82-55-772-1362 Fax: +82-55-759-9363 E-mail:
| | - Seon-Won Kim
- Division of Applied Life Science (BK21 Four), ABC-RLRC, PMBBRC, Gyeongsang National University, Jinju 52828, Republic of Korea,Corresponding authors S.W. Kim Phone: +82-55-772-1362 Fax: +82-55-759-9363 E-mail:
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20
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Inabu Y, Taguchi Y, Miyamoto H, Etoh T, Shiotsuka Y, Fujino R, Okada T, Udagawa M, Tsuji N, Matsuura M, Tsuboi A, Kato T, Kodama H, Ohno H, Takahashi H. Development of a novel feeding method for Japanese black calves with thermophile probiotics at postweaning. J Appl Microbiol 2022; 132:3870-3882. [PMID: 35261112 DOI: 10.1111/jam.15519] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 02/23/2022] [Accepted: 03/03/2022] [Indexed: 11/29/2022]
Abstract
AIMS Probiotic effects of compost containing thermophiles on productivity have been reported in domestic animals, although not cattle. We evaluated the effects of administering Caldibacillus hisashii, a thermophile contained in compost, on growth, blood components, faecal organic acid concentrations and microbiota population in Japanese black calves. METHODS AND RESULTS Calves were administered C. hisashii from 3 to 5 mo of age. Administering C. hisashii decreased feed intake without affecting body weight, indicating that feed efficiency is improved by administration. Administering C. hisashii decreased plasma insulin concentration without affecting glucose and nonesterified fatty acid concentrations. Chao1 was decreased by exposure at 5 mo of age. Similarly, weighted- and unweighted UniFrac distances were affected by treatment at 5 mo of age. Faecal abundance of the phylum Bacteroidetes tended to be increased by exposure. Faecal propionic acid concentration was correlated positively with faecal abundance of phylum Bacteroidetes but negatively with that of Firmicutes. Interestingly, the population of the genus Methanobrevibacter, representing the majority of methanogens, was lowered by exposure and was negatively correlated with faecal propionic acid concentration. CONCLUSION Administration of C. hisashii has the potential to improve growth performance of Japanese black calves and to contribute to reducing environmental load, which may be associated with altered endocrine kinetics and gut microbial populations. SIGNIFICANCE AND IMPACTS OF THE STUDY This study revealed that isolated thermophiles included in compost may exert probiotic effects on calves.
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Affiliation(s)
- Yudai Inabu
- Kuju Agricultural Research Center, Graduate School of Agriculture, Kyushu University, Oita, Japan
| | - Yutaka Taguchi
- Kuju Agricultural Research Center, Graduate School of Agriculture, Kyushu University, Oita, Japan
| | - Hirokuni Miyamoto
- Graduate School of Horticulture, Chiba University, Chiba, Japan.,RIKEN IMS, Yokohama, Kanagawa, Japan.,Japan Eco-science (Nikkan Kagaku) Co., Ltd., Chiba, Japan.,Sermas, Co., Ltd., Chiba, Japan
| | - Tetsuji Etoh
- Kuju Agricultural Research Center, Graduate School of Agriculture, Kyushu University, Oita, Japan
| | - Yuji Shiotsuka
- Kuju Agricultural Research Center, Graduate School of Agriculture, Kyushu University, Oita, Japan
| | - Ryoichi Fujino
- Kuju Agricultural Research Center, Graduate School of Agriculture, Kyushu University, Oita, Japan
| | - Toru Okada
- Asuka Animal Health Co., Ltd., Tokyo, Japan
| | | | | | - Makiko Matsuura
- Graduate School of Horticulture, Chiba University, Chiba, Japan.,Sermas, Co., Ltd., Chiba, Japan
| | - Arisa Tsuboi
- Graduate School of Horticulture, Chiba University, Chiba, Japan.,Japan Eco-science (Nikkan Kagaku) Co., Ltd., Chiba, Japan.,Sermas, Co., Ltd., Chiba, Japan.,RIKEN CSRS, Yokohama, Kanagawa, Japan
| | | | - Hiroaki Kodama
- Graduate School of Horticulture, Chiba University, Chiba, Japan
| | | | - Hideyuki Takahashi
- Kuju Agricultural Research Center, Graduate School of Agriculture, Kyushu University, Oita, Japan
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21
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Tamayao P, Ribeiro GO, McAllister TA, Ominski KH, Okine EK, McGeough EJ. Effects of biochar source, level of inclusion, and particle size on in vitro dry matter disappearance, total gas, and methane production and ruminal fermentation parameters in a barley silage-based diet. CANADIAN JOURNAL OF ANIMAL SCIENCE 2022. [DOI: 10.1139/cjas-2021-0007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study evaluated the effects of biochar differing in source, inclusion level, and particle size on dry matter disappearance (DMD), total gas and methane (CH4) production, and ruminal fermentation in a barley silage-based diet. The seven biochar products used were coconut (CP001 and CP014) or pine (CP002, CP015, CP016, CP023, CP024)-based. Experiment 1 (Exp. 1) evaluated these biochars at 4.5%, 13.5%, and 22.5% level of diet inclusion, whereas Experiment 2 (Exp. 2) evaluated CP002, CP016, and CP023 at 2.25% and 4.50% of the diet at <0.5, 0.5–2.0, >2.0 mm particle size. Data were analyzed using PROC MIXED in SAS as a randomized complete block design, with biochar source, inclusion level, and particle size (Exp. 2 only) as fixed effects with run and replicate as random effects. Increasing level of biochar inclusion linearly (P < 0.01) decreased DMD in Exp. 1 and did not influence DMD (P > 0.05) in Exp. 2. Total gas, CH4 (mL·g−1 DMD), and ruminal fermentation parameters were not affected by product, inclusion level, or particle size (P > 0.05). In conclusion, biochar of varying source and particle size did not mitigate CH4 production, but reduced DMD at higher inclusion levels in the barley silage-based diet.
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Affiliation(s)
- Paul Tamayao
- Department of Animal Science, University of Manitoba, Winnipeg, Manitoba, Canada, R3T 2N2
- National Centre for Livestock and the Environment, University of Manitoba, Winnipeg, Manitoba, Canada, R3T 2N2
| | - Gabriel O. Ribeiro
- Department of Animal and Poultry Science, University of Saskatchewan, 51 Campus Dr, Saskatoon, Saskatchewan, Canada, S7N 5A8
| | - Tim A. McAllister
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, 5403 1st Avenue South Lethbridge, Alberta, Canada, T1J 4B1
| | - Kim H. Ominski
- Department of Animal Science, University of Manitoba, Winnipeg, Manitoba, Canada, R3T 2N2
- National Centre for Livestock and the Environment, University of Manitoba, Winnipeg, Manitoba, Canada, R3T 2N2
| | - Erasmus K. Okine
- Provost and Vice President Academic, University of Lethbridge, Lethbridge, Alberta, Canada, T1K 3M4
| | - Emma J. McGeough
- Department of Animal Science, University of Manitoba, Winnipeg, Manitoba, Canada, R3T 2N2
- National Centre for Livestock and the Environment, University of Manitoba, Winnipeg, Manitoba, Canada, R3T 2N2
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22
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Ungerfeld EM, Beauchemin KA, Muñoz C. Current Perspectives on Achieving Pronounced Enteric Methane Mitigation From Ruminant Production. FRONTIERS IN ANIMAL SCIENCE 2022. [DOI: 10.3389/fanim.2021.795200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Limiting global warming to 1.5°C above pre-industrial levels by 2050 requires achieving net zero emissions of greenhouse gases by 2050 and a strong decrease in methane (CH4) emissions. Our aim was to connect the global need for mitigation of the emissions of greenhouse gases and enteric CH4 from ruminant production to basic research on the biological consequences of inhibiting rumen methanogenesis in order to better design strategies for pronounced mitigation of enteric CH4 production without negative impacts on animal productivity or economic returns. Ruminant production worldwide has the challenge of decreasing its emissions of greenhouse gases while increasing the production of meat and milk to meet consumers demand. Production intensification decreases the emissions of greenhouse gases per unit of product, and in some instances has decreased total emissions, but in other instances has resulted in increased total emissions of greenhouse gases. We propose that decreasing total emission of greenhouse gases from ruminants in the next decades while simultaneously increasing meat and milk production will require strong inhibition of rumen methanogenesis. An aggressive approach to pronounced inhibition of enteric CH4 emissions is technically possible through the use of chemical compounds and/or bromoform-containing algae, but aspects such as safety, availability, government approval, consumer acceptance, and impacts on productivity and economic returns must be satisfactorily addressed. Feeding these additives will increase the cost of ruminant diets, which can discourage their adoption. On the other hand, inhibiting rumen methanogenesis potentially saves energy for the host animal and causes profound changes in rumen fermentation and post-absorptive metabolism. Understanding the biological consequences of methanogenesis inhibition could allow designing strategies to optimize the intervention. We conducted meta-regressions using published studies with at least one treatment with >50% inhibition of CH4 production to elucidate the responses of key rumen metabolites and animal variables to methanogenesis inhibition, and understand possible consequences on post-absorptive metabolism. We propose possible avenues, attainable through the understanding of biological consequences of the methanogenesis inhibition intervention, to increase animal productivity or decrease feed costs when inhibiting methanogenesis.
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Kholif AE, Gouda GA, Patra AK. The sustainable mitigation of in vitro ruminal biogas emissions by ensiling date palm leaves and rice straw with lactic acid bacteria and Pleurotus ostreatus for cleaner livestock production. J Appl Microbiol 2021; 132:2925-2939. [PMID: 34967069 DOI: 10.1111/jam.15432] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 12/27/2021] [Indexed: 11/30/2022]
Abstract
AIMS The sustainable utilization of date palm leaves (DPL) and rice straw (RS) as feed materials for ruminant was evaluated using an in vitro wireless gas production technique. METHODS AND RESULTS Date palm leaves and RS were individually ensiled with lactic acid bacteria (LAB) for 45 d or used as substrates for the cultivation of Pleurotus ostreatus (PO) mushroom for 35 d. A total mixed ration was formulated as a control ration. In the other rations, berseem hay replaced DPL (ensiled without additives or ensiled with lactic acid bacteria or PO) at 25, 50, 75 and 100%. Ensiling with LAB did not affect the chemical composition of DPL or RS, while PO treatment reduced their fiber fractions contents. Ensiling without additives lowered (P<0.05) the asymptotic production of total gas, methane (CH4 ) and carbon dioxide (CO2 ), and the rate of CH4 and CO2 while increasing (P<0.05) the lag time of CH4 and CO2 production. Ensiling of materials with LAB and treatment with PO decreased (P<0.05) the asymptotic production of total gas, CH4 and CO2 production and decreased the rate of CH4 and CO2 production. Ensiling without additives decreased (P<0.05) total bacterial count, and increased (P<0.05) fermentation pH and total volatile fatty acids (VFA), while LAB ensiled DPL increased (P<0.05) total VFA and propionate concentrations and decreased total protozoal count. The PO treated DPL decreased (P<0.05) bacterial count, protozoal count and fermentation pH and increased total VFA production. CONCLUSIONS Replacing berseem hay with LAB or PO treated DPL at 25% increased gas production; however, increased CH4 and CO2 production, while the other replacement levels decreased total gas, CH4 and CO2 production. The treatment with LAB is more recommended than the PO treatment.
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Affiliation(s)
- Ahmed E Kholif
- Dairy Science Department, National Research Centre, 33 Bohouth St. Dokki, Giza, Egypt
| | - Gouda A Gouda
- Dairy Science Department, National Research Centre, 33 Bohouth St. Dokki, Giza, Egypt
| | - Amlan K Patra
- Department of Animal Nutrition, West Bengal University of Animal and Fishery Sciences, 37 K.B. Sarani, Kolkata, India
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24
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Min BR, Parker D, Brauer D, Waldrip H, Lockard C, Hales K, Akbay A, Augyte S. The role of seaweed as a potential dietary supplementation for enteric methane mitigation in ruminants: Challenges and opportunities. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2021; 7:1371-1387. [PMID: 34786510 PMCID: PMC8581222 DOI: 10.1016/j.aninu.2021.10.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 09/30/2021] [Accepted: 10/04/2021] [Indexed: 11/29/2022]
Abstract
Seaweeds are macroalgae, which can be of many different morphologies, sizes, colors, and chemical profiles. They include brown, red, and green seaweeds. Brown seaweeds have been more investigated and exploited in comparison to other seaweed types for their use in animal feeding studies due to their large sizes and ease of harvesting. Recent in vitro and in vivo studies suggest that plant secondary compound-containing seaweeds (e.g., halogenated compounds, phlorotannins, etc.) have the potential to mitigate enteric methane (CH4) emissions from ruminants when added to the diets of beef and dairy cattle. Red seaweeds including Asparagopsis spp. are rich in crude protein and halogenated compounds compared to brown and green seaweeds. When halogenated-containing red seaweeds are used as the active ingredient in ruminant diets, bromoform concentration can be used as an indicator of anti-methanogenic properties. Phlorotannin-containing brown seaweed has also the potential to decrease CH4 production. However, numerous studies examined the possible anti-methanogenic effects of marine seaweeds with inconsistent results. This work reviews existing data associated with seaweeds and in vitro and in vivo rumen fermentation, animal performance, and enteric CH4 emissions in ruminants. Increased understanding of the seaweed supplementation related to rumen fermentation and its effect on animal performance and CH4 emissions in ruminants may lead to novel strategies aimed at reducing greenhouse gas emissions while improving animal productivity.
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Affiliation(s)
- Byeng R. Min
- College of Agriculture, Environment and Nutrition Sciences, Tuskegee University, Tuskegee, AL 36088, USA
- United States Department of Agriculture (USDA), Agriculture Research Service (ARS), 2300 Experiment Station Dr., Bushland, TX 79012, USA
| | - David Parker
- United States Department of Agriculture (USDA), Agriculture Research Service (ARS), 2300 Experiment Station Dr., Bushland, TX 79012, USA
| | - David Brauer
- United States Department of Agriculture (USDA), Agriculture Research Service (ARS), 2300 Experiment Station Dr., Bushland, TX 79012, USA
| | - Heidi Waldrip
- United States Department of Agriculture (USDA), Agriculture Research Service (ARS), 2300 Experiment Station Dr., Bushland, TX 79012, USA
| | - Catherine Lockard
- United States Department of Agriculture (USDA), Agriculture Research Service (ARS), 2300 Experiment Station Dr., Bushland, TX 79012, USA
| | - Kristin Hales
- Department of Animal and Food Sciences, Texas Tech University, Lubbock, TX 79409, USA
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25
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Cristobal-Carballo O, McCoard SA, Cookson AL, Ganesh S, Lowe K, Laven RA, Muetzel S. Effect of Methane Inhibitors on Ruminal Microbiota During Early Life and Its Relationship With Ruminal Metabolism and Growth in Calves. Front Microbiol 2021; 12:710914. [PMID: 34603238 PMCID: PMC8482044 DOI: 10.3389/fmicb.2021.710914] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 08/17/2021] [Indexed: 11/13/2022] Open
Abstract
The present study aimed to determine whether dietary supplementation with methanogen inhibitors during early life may lead to an imprint on the rumen microbial community and change the rumen function and performance of calves to 49-weeks of rearing. Twenty-four 4-day-old Friesian x Jersey cross calves were randomly assigned into a control and a treatment group. Treated calves were fed a combination of chloroform (CF) and 9,10-anthraquinone (AQ) in the solid diets during the first 12 weeks of rearing. Afterward, calves were grouped by treatments until week 14, and then managed as a single group on pasture. Solid diets and water were offered ad libitum. Methane measurements, and sample collections for rumen metabolite and microbial community composition were carried out at the end of weeks 2, 4, 6, 8, 10, 14, 24 and 49. Animal growth and dry matter intake (DMI) were regularly monitored over the duration of the experiment. Methane emissions decreased up to 90% whilst hydrogen emissions increased in treated compared to control calves, but only for up to 2 weeks after treatment cessation. The near complete methane inhibition did not affect calves’ DMI and growth. The acetate:propionate ratio decreased in treated compared to control calves during the first 14 weeks but was similar at weeks 24 and 49. The proportions of Methanobrevibacter and Methanosphaera decreased in treated compared to control calves during the first 14 weeks; however, at week 24 and 49 the archaea community was similar between groups. Bacterial proportions at the phylum level and the abundant bacterial genera were similar between treatment groups. In summary, methane inhibition increased hydrogen emissions, altered the methanogen community and changed the rumen metabolite profile without major effects on the bacterial community composition. This indicated that the main response of the bacterial community was not a change in composition but rather a change in metabolic pathways. Furthermore, once methane inhibition ceased the methanogen community, rumen metabolites and hydrogen emissions became similar between treatment groups, indicating that perhaps using the treatments tested in this study, it is not possible to imprint a low methane microbiota into the rumen in the solid feed of pre-weaned calves.
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Affiliation(s)
- Omar Cristobal-Carballo
- Ruminant Nutrition and Physiology Team, AgResearch Grasslands, Palmerston North, New Zealand.,School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - Susan A McCoard
- Ruminant Nutrition and Physiology Team, AgResearch Grasslands, Palmerston North, New Zealand
| | - Adrian L Cookson
- School of Veterinary Science, Massey University, Palmerston North, New Zealand.,Food System Integrity, AgResearch Grasslands, Palmerston North, New Zealand
| | - Siva Ganesh
- Biostatistics Team, AgResearch Grasslands, Palmerston North, New Zealand
| | - Katherine Lowe
- Ruminant Nutrition and Physiology Team, AgResearch Grasslands, Palmerston North, New Zealand
| | - Richard A Laven
- School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - Stefan Muetzel
- Ruminant Nutrition and Physiology Team, AgResearch Grasslands, Palmerston North, New Zealand
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26
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Huang H, Szumacher-Strabel M, Patra AK, Ślusarczyk S, Lechniak D, Vazirigohar M, Varadyova Z, Kozłowska M, Cieślak A. Chemical and phytochemical composition, in vitro ruminal fermentation, methane production, and nutrient degradability of fresh and ensiled Paulownia hybrid leaves. Anim Feed Sci Technol 2021. [DOI: 10.1016/j.anifeedsci.2021.115038] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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27
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Tamayao P, Ribeiro GO, McAllister TA, Ominski KH, Saleem AM, Yang HE, Okine EK, McGeough EJ. Effect of pine-based biochars with differing physiochemical properties on methane production, ruminal fermentation, and rumen microbiota in an artificial rumen (RUSITEC) fed barley silage. CANADIAN JOURNAL OF ANIMAL SCIENCE 2021. [DOI: 10.1139/cjas-2020-0129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This study investigated the effects of three pine-based biochar products on nutrient disappearance, total gas and methane (CH4) production, rumen fermentation, microbial protein synthesis, and rumen microbiota in a rumen simulation technique (RUSITEC) fed a barley-silage-based total mixed ration (TMR). Treatments consisted of 10 g TMR supplemented with no biochar (control) and three different biochars (CP016, CP024, and CP028) included at 20 g·kg−1 DM. Treatments were assigned to 16 fermenters (n = 4 per treatment) in two RUSITEC units in a randomized block design for a 17 d experimental period. Data were analyzed using MIXED procedure in SAS, with treatment and day of sampling as fixed effects and RUSITEC unit and fermenters as random effects. Biochar did not affect nutrient disappearance (P > 0.05), nor total gas or CH4, irrespective of unit of expression. The volatile fatty acid, NH3-N, total protozoa, and microbial protein synthesis were not affected by biochar inclusion (P > 0.05). Alpha and beta diversity and rumen microbiota families were not affected by biochar inclusion (P > 0.05). In conclusion, biochar did not reduce CH4 emissions nor affect nutrient disappearance, rumen fermentation, microbial protein synthesis, or rumen microbiota in the RUSITEC.
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Affiliation(s)
- Paul Tamayao
- Department of Animal Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- National Centre for Livestock and the Environment, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Gabriel O. Ribeiro
- Department of Animal and Poultry Science, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada
| | - Tim A. McAllister
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, 5403 1st Avenue South, Lethbridge, AB T1J 4B1, Canada
| | - Kim H. Ominski
- Department of Animal Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- National Centre for Livestock and the Environment, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Atef M. Saleem
- Animal and Poultry Production Department, Faculty of Agriculture, South Valley University, Qena 83523, Egypt
| | - Hee Eun Yang
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, 5403 1st Avenue South, Lethbridge, AB T1J 4B1, Canada
| | - Erasmus K. Okine
- Office of the Provost and Vice-President Academic, University of Lethbridge, Lethbridge, AB T1K 3M4, Canada
| | - Emma J. McGeough
- Department of Animal Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- National Centre for Livestock and the Environment, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
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28
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Hassan FU, Guo Y, Li M, Tang Z, Peng L, Liang X, Yang C. Effect of Methionine Supplementation on Rumen Microbiota, Fermentation, and Amino Acid Metabolism in In Vitro Cultures Containing Nitrate. Microorganisms 2021; 9:microorganisms9081717. [PMID: 34442796 PMCID: PMC8397988 DOI: 10.3390/microorganisms9081717] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/22/2021] [Accepted: 08/03/2021] [Indexed: 01/21/2023] Open
Abstract
This study evaluated the effect of methionine on in vitro methane (CH4) production, rumen fermentation, amino acid (AA) metabolism, and rumen microbiota in a low protein diet. We evaluated three levels of methionine (M0, 0%; M1, 0.28%; and M2, 1.12%) of in the presence of sodium nitrate (1%) in a diet containing elephant grass (90%) and concentrate (10%). We used an in vitro batch culture technique by using rumen fluid from cannulated buffaloes. Total gas and CH4 production were measured in each fermentation bottle at 3, 6, 9, 12, 24, 48, 72 h of incubation. Results revealed that M0 decreased (p < 0.001) the total gas and CH4 production, but methionine exhibited no effect on these parameters. M0 decreased (p < 0.05) the individual and total volatile fatty acids (VFAs), while increasing (p < 0.05) the ruminal pH, acetate to propionate ratio, and microbial protein content. Methionine did not affect ruminal AA contents except asparagine, which substantially increased (p = 0.003). M2 increased the protozoa counts, but both M0 and M1 decreased (p < 0.05) the relative abundance of Firmicutes while increasing (p < 0.05) the Campilobacterota and Proteobacteria. However, Prevotella and γ-Proteobacteria were identified as biomarkers in the nitrate group. Our findings indicate that methionine can increase ruminal asparagine content and the population of Compylobactor.
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Affiliation(s)
- Faiz-ul Hassan
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Ministry of Agriculture and Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China; (F.-u.H.); (Y.G.); (M.L.); (Z.T.); (L.P.); (X.L.)
- Institute of Animal and Dairy Sciences, Faculty of Animal Husbandry, University of Agriculture, Faisalabad 38040, Pakistan
| | - Yanxia Guo
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Ministry of Agriculture and Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China; (F.-u.H.); (Y.G.); (M.L.); (Z.T.); (L.P.); (X.L.)
| | - Mengwei Li
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Ministry of Agriculture and Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China; (F.-u.H.); (Y.G.); (M.L.); (Z.T.); (L.P.); (X.L.)
| | - Zhenhua Tang
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Ministry of Agriculture and Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China; (F.-u.H.); (Y.G.); (M.L.); (Z.T.); (L.P.); (X.L.)
| | - Lijuan Peng
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Ministry of Agriculture and Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China; (F.-u.H.); (Y.G.); (M.L.); (Z.T.); (L.P.); (X.L.)
| | - Xin Liang
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Ministry of Agriculture and Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China; (F.-u.H.); (Y.G.); (M.L.); (Z.T.); (L.P.); (X.L.)
| | - Chengjian Yang
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Ministry of Agriculture and Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China; (F.-u.H.); (Y.G.); (M.L.); (Z.T.); (L.P.); (X.L.)
- Correspondence: ; Tel.: +86-157-7716-2502
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29
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Ahmed E, Batbekh B, Fukuma N, Kand D, Hanada M, Nishida T. A garlic and citrus extract: Impacts on behavior, feed intake, rumen fermentation, and digestibility in sheep. Anim Feed Sci Technol 2021. [DOI: 10.1016/j.anifeedsci.2021.115007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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30
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Effects of Hydrolysable Tannin with or without Condensed Tannin on Alfalfa Silage Fermentation Characteristics and In Vitro Ruminal Methane Production, Fermentation Patterns, and Microbiota. Animals (Basel) 2021; 11:ani11071967. [PMID: 34209256 PMCID: PMC8300162 DOI: 10.3390/ani11071967] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/19/2021] [Accepted: 06/27/2021] [Indexed: 11/23/2022] Open
Abstract
Simple Summary The sustainability of livestock husbandry requires efficient nitrogen and energy utilization by ruminants fed high-forage diets. The objective of this study was to evaluate the effect of hydrolysable tannin (HT) without or with condensed tannin (CT) on modulating the ensiling characteristics, methane production, ruminal fermentation profile, and microbiota of alfalfa silage. The results showed that adding HT, alone or in combination with CT, to alfalfa at ensiling improves fermentation quality and reduces ruminal methane production of alfalfa silage. Moreover, HT and CT in combination are more potent in modulating fermentation quality and methanogenesis than HT only; however, the high level of inclusion will impair silage degradation and microbiota in the rumen. Importantly, the results from this study revealed that a combination of HT and CT with complementary mechanisms at low doses can improve N utilization efficiency and methane mitigation of silage feed without adverse effects on ruminal fermentation patterns and microbiota. The findings in this study are of practical importance for the effective use of tannins as an additive for improving silage quality and utilization by ruminants. Abstract This study was conducted to evaluate the potential of hydrolysable tannin (chestnut tannin, CHT) without or with condensed tannin (quebracho tannin, QT) for modulating alfalfa silage fermentation characteristics and in vitro ruminal methane (CH4) production, fermentation profile, and microbiota. Alfalfa (235 g/kg fresh weight) was ensiled with no tannins (control), 2% CHT (CHT2), 5% CHT (CHT5), the combination of CHT and QT at 1% each (CHQ2), and CHT and QT at 2.5% each (CHQ5) of forage dry matter (DM). The CHQ2 treatment was more effective in reducing DM losses, pH, and ammonia–nitrogen to total nitrogen ratios of alfalfa silage than CHT2 and CHT5 treatments. All tannin treatments decreased ruminal CH4 production, and the magnitude of the decrease was greater for the combinations than the individual ones. Total volatile fatty acid (VFA) concentrations and DM degradation decreased by tannin treatments, but microbial protein (MCP) synthesis increased. The total VFA concentrations and DM degradation were lower with CHQ2 treatment than with CHT5 and CHQ5 treatments, but the MCP concentrations were comparable among these treatments. Tannin inclusion decreased the abundance of the anaerobic fungi Ruminococcus albus and Ruminococcus flavefaciens, but enhanced Fibrobacter succinogenes. The combination of CHT and QT alleviated the inhibition of CHT supply alone in Butyrivibrio fibrisolvens, Ruminobacer amylophilus, and Prevotella ruminicola as well as protease. The results revealed that a combination of HT from CHT and CT from QT at a low level can reduce proteolysis and CH4 production of alfalfa silage without impairing ruminal fermentation and microbiota.
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31
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Pitta DW, Melgar A, Hristov AN, Indugu N, Narayan KS, Pappalardo C, Hennessy ML, Vecchiarelli B, Kaplan-Shabtai V, Kindermann M, Walker N. Temporal changes in total and metabolically active ruminal methanogens in dairy cows supplemented with 3-nitrooxypropanol. J Dairy Sci 2021; 104:8721-8735. [PMID: 34024597 DOI: 10.3168/jds.2020-19862] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 04/12/2021] [Indexed: 01/08/2023]
Abstract
The purpose of this study was to investigate the effect of 3-nitrooxypropanol (3-NOP), a potent methane inhibitor, on total and metabolically active methanogens in the rumen of dairy cows over the course of the day and over a 12-wk period. Rumen contents of 8 ruminally cannulated early-lactation dairy cows were sampled at 2, 6, and 10 h after feeding during wk 4, 8, and 12 of a randomized complete block design experiment in which 3-NOP was fed at 60 mg/kg of feed dry matter. Cows (4 fed the control and 4 fed the 3-NOP diet) were blocked based on their previous lactation milk yield or predicted milk yield. Rumen samples were extracted for microbial DNA (total) and microbial RNA (metabolically active), PCR amplified for the 16S rRNA gene of archaea, sequenced on an Illumina platform, and analyzed for archaea diversity. In addition, the 16S copy number and 3 ruminal methanogenic species were quantified using the real-time quantitative PCR assay. We detected a difference between DNA and RNA (cDNA)-based archaea communities, revealing that ruminal methanogens differ in their metabolic activities. Within DNA and cDNA components, methanogenic communities differed by sampling hour, week, and treatment. Overall, Methanobrevibacter was the dominant genus (94.3%) followed by Methanosphaera, with the latter genus having greater abundance in the cDNA component (14.5%) compared with total populations (5.5%). Methanosphaera was higher at 2 h after feeding, whereas Methanobrevibacter increased at 6 and 10 h in both groups, showing diurnal patterns among individual methanogenic lineages. Methanobrevibacter was reduced at wk 4, whereas Methanosphaera was reduced at wk 8 and 12 in cows supplemented with 3-NOP compared with control cows, suggesting differential responses among methanogens to 3-NOP. A reduction in Methanobrevibacter ruminantium in all 3-NOP samples from wk 8 was confirmed using real-time quantitative PCR. The relative abundance of individual methanogens was driven by a combination of dietary composition, dry matter intake, and hydrogen concentrations in the rumen. This study provides novel information on the effects of 3-NOP on individual methanogenic lineages, but further studies are needed to understand temporal dynamics and to validate the effects of 3-NOP on individual lineages of ruminal methanogens.
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Affiliation(s)
- D W Pitta
- Department of Clinical Studies, University of Pennsylvania, School of Veterinary Medicine, New Bolton Center, Kennett Square 19348.
| | - A Melgar
- Department of Animal Science, The Pennsylvania State University, University Park 16802
| | - A N Hristov
- Department of Animal Science, The Pennsylvania State University, University Park 16802
| | - N Indugu
- Department of Clinical Studies, University of Pennsylvania, School of Veterinary Medicine, New Bolton Center, Kennett Square 19348
| | - K S Narayan
- Department of Clinical Studies, University of Pennsylvania, School of Veterinary Medicine, New Bolton Center, Kennett Square 19348
| | - C Pappalardo
- Department of Clinical Studies, University of Pennsylvania, School of Veterinary Medicine, New Bolton Center, Kennett Square 19348
| | - M L Hennessy
- Department of Clinical Studies, University of Pennsylvania, School of Veterinary Medicine, New Bolton Center, Kennett Square 19348
| | - B Vecchiarelli
- Department of Clinical Studies, University of Pennsylvania, School of Veterinary Medicine, New Bolton Center, Kennett Square 19348
| | - V Kaplan-Shabtai
- Department of Clinical Studies, University of Pennsylvania, School of Veterinary Medicine, New Bolton Center, Kennett Square 19348
| | - M Kindermann
- Animal Nutrition and Health, DSM Nutritional Products, Basel CH-4002, Switzerland
| | - N Walker
- Animal Nutrition and Health, DSM Nutritional Products, Basel CH-4002, Switzerland
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Huo W, Wang X, Wei Z, Zhang H, Liu Q, Zhang S, Wang C, Chen L, Xu Q, Guo G. Effect of lactic acid bacteria on the ensiling characteristics and in vitro ruminal fermentation parameters of alfalfa silage. ITALIAN JOURNAL OF ANIMAL SCIENCE 2021. [DOI: 10.1080/1828051x.2021.1906167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Wenjie Huo
- Animal Sciences College, Shanxi Agricultural University, Jinzhong, China
| | - Xinyu Wang
- Animal Sciences College, Shanxi Agricultural University, Jinzhong, China
| | - Zhixia Wei
- Animal Sciences College, Shanxi Agricultural University, Jinzhong, China
| | - Haixuan Zhang
- Animal Sciences College, Shanxi Agricultural University, Jinzhong, China
| | - Qiang Liu
- Animal Sciences College, Shanxi Agricultural University, Jinzhong, China
| | - Shuanlin Zhang
- Animal Sciences College, Shanxi Agricultural University, Jinzhong, China
| | - Cong Wang
- Animal Sciences College, Shanxi Agricultural University, Jinzhong, China
| | - Lei Chen
- Animal Sciences College, Shanxi Agricultural University, Jinzhong, China
| | - Qingfang Xu
- Animal Sciences College, Shanxi Agricultural University, Jinzhong, China
| | - Gang Guo
- Animal Sciences College, Shanxi Agricultural University, Jinzhong, China
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Black JL, Davison TM, Box I. Methane Emissions from Ruminants in Australia: Mitigation Potential and Applicability of Mitigation Strategies. Animals (Basel) 2021; 11:ani11040951. [PMID: 33805324 PMCID: PMC8066058 DOI: 10.3390/ani11040951] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 02/06/2023] Open
Abstract
Anthropomorphic greenhouse gases are raising the temperature of the earth and threatening ecosystems. Since 1950 atmospheric carbon dioxide has increased 28%, while methane has increased 70%. Methane, over the first 20 years after release, has 80-times more warming potential as a greenhouse gas than carbon dioxide. Enteric methane from microbial fermentation of plant material by ruminants contributes 30% of methane released into the atmosphere, which is more than any other single source. Numerous strategies were reviewed to quantify their methane mitigation potential, their impact on animal productivity and their likelihood of adoption. The supplements, 3-nitrooxypropanol and the seaweed, Asparagopsis, reduced methane emissions by 40+% and 90%, respectively, with increases in animal productivity and small effects on animal health or product quality. Manipulation of the rumen microbial population can potentially provide intergenerational reduction in methane emissions, if treated animals remain isolated. Genetic selection, vaccination, grape marc, nitrate or biochar reduced methane emissions by 10% or less. Best management practices and cattle browsing legumes, Desmanthus or Leucaena species, result in small levels of methane mitigation and improved animal productivity. Feeding large amounts daily of ground wheat reduced methane emissions by around 35% in dairy cows but was not sustained over time.
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Affiliation(s)
- John L. Black
- John L Black Consulting, Warrimoo, NSW 2774, Australia
- Correspondence:
| | - Thomas M. Davison
- Livestock Productivity Partnership, University of New England, Armidale, NSW 2351, Australia;
| | - Ilona Box
- Ilona Box Consulting, Warrimoo, NSW 2774, Australia;
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Roque BM, Venegas M, Kinley RD, de Nys R, Duarte TL, Yang X, Kebreab E. Red seaweed (Asparagopsis taxiformis) supplementation reduces enteric methane by over 80 percent in beef steers. PLoS One 2021; 16:e0247820. [PMID: 33730064 PMCID: PMC7968649 DOI: 10.1371/journal.pone.0247820] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 02/13/2021] [Indexed: 01/29/2023] Open
Abstract
The red macroalgae (seaweed) Asparagopsis spp. has shown to reduce ruminant enteric methane (CH4) production up to 99% in vitro. The objective of this study was to determine the effect of Asparagopsis taxiformis on CH4 production (g/day per animal), yield (g CH4/kg dry matter intake (DMI)), and intensity (g CH4/kg ADG); average daily gain (ADG; kg gain/day), feed conversion efficiency (FCE; kg ADG/kg DMI), and carcass and meat quality in growing beef steers. Twenty-one Angus-Hereford beef steers were randomly allocated to one of three treatment groups: 0% (Control), 0.25% (Low), and 0.5% (High) A. taxiformis inclusion based on organic matter intake. Steers were fed 3 diets: high, medium, and low forage total mixed ration (TMR) representing life-stage diets of growing beef steers. The Low and High treatments over 147 days reduced enteric CH4 yield 45 and 68%, respectively. However, there was an interaction between TMR type and the magnitude of CH4 yield reduction. Supplementing low forage TMR reduced CH4 yield 69.8% (P <0.01) for Low and 80% (P <0.01) for High treatments. Hydrogen (H2) yield (g H2/DMI) increased (P <0.01) 336 and 590% compared to Control for the Low and High treatments, respectively. Carbon dioxide (CO2) yield (g CO2/DMI) increased 13.7% between Control and High treatments (P = 0.03). No differences were found in ADG, carcass quality, strip loin proximate analysis and shear force, or consumer taste preferences. DMI tended to decrease 8% (P = 0.08) in the Low treatment and DMI decreased 14% (P <0.01) in the High treatment. Conversely, FCE tended to increase 7% in Low (P = 0.06) and increased 14% in High (P <0.01) treatment compared to Control. The persistent reduction of CH4 by A. taxiformis supplementation suggests that this is a viable feed additive to significantly decrease the carbon footprint of ruminant livestock and potentially increase production efficiency.
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Affiliation(s)
- Breanna M. Roque
- Department of Animal Science, University of California, Davis, California, United States of America
- * E-mail:
| | - Marielena Venegas
- Department of Animal Science, University of California, Davis, California, United States of America
| | - Robert D. Kinley
- Commonwealth Scientific and Industrial Research Organisation, Agriculture and Food, Townsville, Queensland, Australia
| | - Rocky de Nys
- College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
| | - Toni L. Duarte
- Department of Animal Science, University of California, Davis, California, United States of America
| | - Xiang Yang
- Department of Animal Science, University of California, Davis, California, United States of America
| | - Ermias Kebreab
- Department of Animal Science, University of California, Davis, California, United States of America
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Tamayao P, Ribeiro G, McAllister T, Yang H, Saleem A, Ominski K, Okine E, McGeough E. Effects of post-pyrolysis treated biochars on methane production, ruminal fermentation, and rumen microbiota of a silage-based diet in an artificial rumen system (RUSITEC). Anim Feed Sci Technol 2021. [DOI: 10.1016/j.anifeedsci.2020.114802] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Mitsumori M, Hasunuma T, Okimura T, Shinkai T, Kobayashi Y, Hirako M, Kushibiki S. Theoretical turnover rate of the rumen liquid fraction in dairy cows and its relationship to feed intake, rumen fermentation, and milk production. Anim Sci J 2019; 90:1556-1566. [PMID: 31650688 DOI: 10.1111/asj.13305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 08/28/2019] [Accepted: 09/11/2019] [Indexed: 11/30/2022]
Abstract
Ruminant animals are able to convert plant materials (grain and the human-indigestible portion of carbohydrates) to milk and meat. In this conversion, most of the plant materials are digested by rumen fermentation and are changed to short-chain fatty acids, microbial cells, and methane, which is released into the atmosphere. The relationships among feed, rumen fermentation, and milk production are poorly understood. Here we report a novel indicator of characteristics of rumen fermentation, theoretical turnover rate (TTOR) of the rumen liquid fraction. The TTOR was calculated from the presumed rumen volume (PRV) which is estimated by dividing the methane yield by the methane concentration of rumen fluid. The formula for the TTOR is: TTOR = PRV/body weight0.75 . Our present analyses confirm that the TTOR as an indicator is capable of connecting feed, rumen fermentation, and milk production, because dry matter intake/TTOR showed a strong correlation with milk yield/TTOR. In addition, the TTOR may be related to ruminal pH, as we observed that the ruminal pH decreased as the TTOR increased. We propose that the TTOR is a factor characterizing rumen fermentation and a good indicator of the productivity of ruminants and dysbiosis of the rumen microbiome.
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Affiliation(s)
- Makoto Mitsumori
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
| | - Toshiya Hasunuma
- Toyama Prefectural Agricultural, Forestry and Fisheries Research Center, Toyama, Toyama, Japan
| | - Tomoko Okimura
- Toyama Prefectural Agricultural, Forestry and Fisheries Research Center, Toyama, Toyama, Japan
| | - Takumi Shinkai
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
| | - Yosuke Kobayashi
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
| | - Makoto Hirako
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
| | - Shiro Kushibiki
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
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Mamuad LL, Lee SS, Lee SS. Recent insight and future techniques to enhance rumen fermentation in dairy goats. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2019; 32:1321-1330. [PMID: 31357272 PMCID: PMC6668860 DOI: 10.5713/ajas.19.0323] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 06/17/2019] [Indexed: 02/06/2023]
Abstract
Recent development of novel techniques in systems biology have been used to improve and manipulate the rumen microbial ecosystem and gain a deeper understanding of its physiological and microbiological interactions and relationships. This provided a deeper insight and understanding of the relationship and interactions between the rumen microbiome and the host animal. New high-throughput techniques have revealed that the dominance of Proteobacteria in the neonatal gut might be derived from the maternal placenta through fetal swallowing of amniotic fluid in utero, which gradually decreases in the reticulum, omasum, and abomasum with increasing age after birth. Multi "omics" technologies have also enhanced rumen fermentation and production efficiency of dairy goats using dietary interventions through greater knowledge of the links between nutrition, metabolism, and the rumen microbiome and their effect in the environment. For example, supplementation of dietary lipid, such as linseed, affects rumen fermentation by favoring the accumulation of α-linolenic acid biohydrogenation with a high correlation to the relative abundance of Fibrobacteriaceae. This provides greater resolution of the interlinkages among nutritional strategies, rumen microbes, and metabolism of the host animal that can set the foundation for new advancements in ruminant nutrition using multi 'omics' technologies.
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Affiliation(s)
- Lovelia L Mamuad
- Department of Animal Science and Technology, Sunchon National University, Suncheon, Jeonnam 57922, Korea
| | - Sung Sill Lee
- Division of Applied Life Science (BK21 Program) and Institute of Agriculture & Life Science (IALS), Jinju 52828, Korea
| | - Sang Suk Lee
- Department of Animal Science and Technology, Sunchon National University, Suncheon, Jeonnam 57922, Korea
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Yang C, McKain N, McCartney CA, Wallace RJ. Consequences of inhibiting methanogenesis on the biohydrogenation of fatty acids in bovine ruminal digesta. Anim Feed Sci Technol 2019. [DOI: 10.1016/j.anifeedsci.2019.05.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Occurrence and Function of the Na +-Translocating NADH:Quinone Oxidoreductase in Prevotella spp. Microorganisms 2019; 7:microorganisms7050117. [PMID: 31035603 PMCID: PMC6560451 DOI: 10.3390/microorganisms7050117] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 04/08/2019] [Accepted: 04/25/2019] [Indexed: 12/18/2022] Open
Abstract
Strictly anaerobic Prevotella spp. are characterized by their vast metabolic potential. As members of the Prevotellaceae family, they represent the most abundant organisms in the rumen and are typically found in monogastrics such as pigs and humans. Within their largely anoxic habitats, these bacteria are considered to rely primarily on fermentation for energy conservation. A recent study of the rumen microbiome identified multiple subunits of the Na+-translocating NADH:quinone oxidoreductase (NQR) belonging to different Prevotella spp. Commonly, the NQR is associated with biochemical energy generation by respiration. The existence of this Na+ pump in Prevotella spp. may indicate an important role for electrochemical Na+ gradients in their anaerobic metabolism. However, detailed information about the potential activity of the NQR in Prevotella spp. is not available. Here, the presence of a functioning NQR in the strictly anaerobic model organism P. bryantii B14 was verified by conducting mass spectrometric, biochemical, and kinetic experiments. Our findings propose that P. bryantii B14 and other Prevotella spp. retrieved from the rumen operate a respiratory NQR together with a fumarate reductase which suggests that these ruminal bacteria utilize a sodium motive force generated during respiratory NADH:fumarate oxidoreduction.
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Climate Change and Goat Production: Enteric Methane Emission and Its Mitigation. Animals (Basel) 2018; 8:ani8120235. [PMID: 30544616 PMCID: PMC6316019 DOI: 10.3390/ani8120235] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 11/25/2018] [Accepted: 12/05/2018] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Given that goats are considered more climate resilient than other ruminant species, research efforts are therefore needed to understand goat productivity during exposure to high ambient temperatures. Heat stress can affect the digestion and rumen fermentation pattern of goats, which contributes to the reduction in production performance in goats. Diet composition, breed and environmental stresses are common factors which negatively influence rumen function and enteric methane (CH4) emission. There are three mechanisms by which enteric CH4 can be reduced: targeting end product of digestion to propionate, providing alternate hydrogen sink and selectively inactivating rumen methanogens. The various strategies that can be implemented to mitigate enteric CH4 include nutritional interventions, management strategies and application of advanced biotechnological tools. Abstract The ability of an animal to cope and adapt itself to the changing climate virtually depends on the function of rumen and rumen inhabitants such as bacteria, protozoa, fungi, virus and archaea. Elevated ambient temperature during the summer months can have a significant influence on the basic physiology of the rumen, thereby affecting the nutritional status of the animals. Rumen volatile fatty acid (VFA) production decreases under conditions of extreme heat. Growing recent evidence suggests there are genetic variations among breeds of goats in the impact of heat stress on rumen fermentation pattern and VFA production. Most of the effects of heat stress on rumen fermentation and enteric methane (CH4) emission are attributed to differences in the rumen microbial population. Heat stress-induced rumen function impairment is mainly associated with an increase in Streptococcus genus bacteria and with a decrease in the bacteria of Fibrobactor genus. Apart from its major role in global warming and greenhouse effect, enteric CH4 is also considered as a dietary energy loss in goats. These effects warrant mitigating against CH4 production to ensure optimum economic return from goat farming as well as to reduce the impact on global warming as CH4 is one of the more potent greenhouse gases (GHG). The various strategies that can be implemented to mitigate enteric CH4 emission include nutritional interventions, different management strategies and applying advanced biotechnological tools to find solution to reduce CH4 production. Through these advanced technologies, it is possible to identify genetically superior animals with less CH4 production per unit feed intake. These efforts can help the farming community to sustain goat production in the changing climate scenario.
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Wang K, Nan X, Chu K, Tong J, Yang L, Zheng S, Zhao G, Jiang L, Xiong B. Shifts of Hydrogen Metabolism From Methanogenesis to Propionate Production in Response to Replacement of Forage Fiber With Non-forage Fiber Sources in Diets in vitro. Front Microbiol 2018; 9:2764. [PMID: 30524394 PMCID: PMC6262304 DOI: 10.3389/fmicb.2018.02764] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 10/29/2018] [Indexed: 12/31/2022] Open
Abstract
The rumen microbial complex adaptive mechanism invalidates various methane (CH4) mitigation strategies. Shifting the hydrogen flow toward alternative electron acceptors, such as propionate, was considered to be a meaningful mitigation strategy. A completely randomized design was applied in in vitro incubation to investigate the effects of replacing forage fiber with non-forage fiber sources (NFFS) in diets on methanogenesis, hydrogen metabolism, propionate production and the methanogenic and bacterial community. There are two treatments in the current study, CON (a basic total mixed ration) and TRT (a modified total mixed ration). The dietary treatments were achieved by partly replacing forage fiber with NFFS (wheat bran and soybean hull) to decrease forage neutral detergent fiber (fNDF) content from 24.0 to 15.8%, with the composition and inclusion rate of other dietary ingredients remaining the same in total mixed rations. The concentrations of CH4, hydrogen (H2) and volatile fatty acids were determined using a gas chromatograph. The archaeal and bacterial 16S rRNA genes were sequenced by Miseq high-throughput sequencing and used to reveal the relative abundance of methanogenic and bacterial communities. The results revealed that the concentration of propionate was significantly increased, while the concentration of acetate and the acetate to propionate ratio were not affected by treatments. Compared with CON, the production of H2 increased by 8.45% and the production of CH4 decreased by 14.06%. The relative abundance of Methanomassiliicoccus was significantly increased, but the relative abundance of Methanobrevibacter tended to decrease in TRT group. At the bacterial phylum level, the TRT group significantly decreased the relative abundance of Firmicutes and tended to increase the relative abundance of Bacteroidetes. The replacement of forage fiber with NFFS in diets can affect methanogenesis by shifting the hydrogen flow toward propionate, and part is directed to H2 in vitro. The shift was achieved by a substitution of Firmicutes by Bacteroidetes, another substitution of Methanobrevibacter by Methanomassiliicoccus. Theoretical predictions of displacements of H2 metabolism from methanogenesis to propionate production was supported by the dietary intervention in vitro.
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Affiliation(s)
- Kun Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China.,State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Xuemei Nan
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Kangkang Chu
- Beijing Dairy Cattle Center, Beijing Capital Agribusiness Group, Beijing, China
| | - Jinjin Tong
- Beijing Key Laboratory for Dairy Cow Nutrition, Beijing University of Agriculture, Beijing, China
| | - Liang Yang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shanshan Zheng
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Guangyong Zhao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Linshu Jiang
- Beijing Key Laboratory for Dairy Cow Nutrition, Beijing University of Agriculture, Beijing, China
| | - Benhai Xiong
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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Abecia L, Martínez-Fernandez G, Waddams K, Martín-García AI, Pinloche E, Creevey CJ, Denman SE, Newbold CJ, Yáñez-Ruiz DR. Analysis of the Rumen Microbiome and Metabolome to Study the Effect of an Antimethanogenic Treatment Applied in Early Life of Kid Goats. Front Microbiol 2018; 9:2227. [PMID: 30356690 PMCID: PMC6189281 DOI: 10.3389/fmicb.2018.02227] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 08/31/2018] [Indexed: 11/13/2022] Open
Abstract
This work aimed to gain insight into the transition from milk to solid feeding at weaning combining genomics and metabolomics on rumen contents from goat kids treated with a methanogenic inhibitor (bromochloromethane, BCM). Sixteen goats giving birth to two kids were used. Eight does were treated (D+) with BCM after giving birth and over 2 months. One kid per doe in both groups was treated with BCM (k+) for 3 months while the other was untreated (k-). Rumen samples were collected from kids at weaning (W) and 1 (W + 1) and 4 (W + 4) months after and from does at weaning and subjected to 16S pyrosequencing and metabolomics analyses combining GC/LC-MS. Results from pyrosequencing showed a clear effect of age of kids, with more diverse bacterial community as solid feed becomes more important after weaning. A number of specific OTUs were significantly different as a result of BCM treatment of the kid at W while at W + 1 and W + 4 less OTUs were significantly changed. At W + 1, Prevotella was increased and Butyrivibrio decreased in BCM treated kids. At W + 4 only the effect of treating mothers resulted in significant changes in the abundance of some OTUs: Ruminococcus, Butyrivibrio and Prevotella. The analysis of the OTUs shared by different treatments revealed that kids at weaning had the largest number of unique OTUs compared with kids at W + 1 (137), W + 4 (238), and does (D) (23). D + k+ kids consistently shared more OTUs with mothers than the other three groups at the three sampling times. The metalobomic study identified 473 different metabolites. In does, lipid super pathway included the highest number of metabolites that were modified by BCM, while in kids all super-pathways were evenly affected. The metabolomic profile of samples from kids at W was different in composition as compared to W + 1 and W + 4, which may be directly ascribed to the process of rumen maturation and changes in the solid diet. This study shows the complexity of the bacterial community and metabolome in the rumen before weaning, which clearly differ from that after weaning and highlight the importance of the dam in transmitting the primary bacterial community after birth.
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Affiliation(s)
- Leticia Abecia
- Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain
| | - Gonzalo Martínez-Fernandez
- Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain.,Commonwealth Scientific and Industrial Research Organisation, Agriculture and Food, Queensland Bioscience Precinct, St Lucia, QLD, Australia
| | - Kate Waddams
- Institute of Biological, Environmental & Rural Sciences (IBERS), Aberystwyth University, Aberystwyth, United Kingdom
| | | | - Eric Pinloche
- Institute of Biological, Environmental & Rural Sciences (IBERS), Aberystwyth University, Aberystwyth, United Kingdom
| | - Christopher J Creevey
- Institute for Global Food Security, Queen's University Belfast, Belfast, United Kingdom
| | - Stuart Edward Denman
- Commonwealth Scientific and Industrial Research Organisation, Agriculture and Food, Queensland Bioscience Precinct, St Lucia, QLD, Australia
| | | | - David R Yáñez-Ruiz
- Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Granada, Spain
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Martinez-Fernandez G, Duval S, Kindermann M, Schirra HJ, Denman SE, McSweeney CS. 3-NOP vs. Halogenated Compound: Methane Production, Ruminal Fermentation and Microbial Community Response in Forage Fed Cattle. Front Microbiol 2018; 9:1582. [PMID: 30131771 PMCID: PMC6090035 DOI: 10.3389/fmicb.2018.01582] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 06/25/2018] [Indexed: 12/17/2022] Open
Abstract
The aim of this study was to investigate the effects of 3-nitrooxypropanol (3-NOP) and chloroform on methane (CH4) and H2 production, ruminal metabolites and microbial community structure in cattle fed a tropical forage diet. Eight rumen-fistulated steers were fed a roughage hay diet (Rhodes grass; Chloris gayana) for 31 days (control period). Four animals received the antimethanogenic compound chloroform (1.6 g chloroform-cyclodextrin/100 kg live weight (LW)) while the other four received 3-NOP (2.5 g 3-NOP/animal/day) for 21 days. Methane decrease compared with control period was similar for both treatments (30-38%) with no differences for expelled H2 between controls and treatments. Daily weight gain (DWG) was significantly increased when animals were treated with 3-NOP compared with chloroform and control. Regarding the ruminal fermentation parameters increases in ammonia, acetate and branched chain fatty acids were observed with both compounds compared with the controls. Also, methylamines, alcohols and dimethyl sulfone (DMSO2) concentrations were significantly increased with the treatments compared with control, being greater with 3-NOP. The rumen microbial analyses revealed a similar profile for both treatments, with a shift in operational taxonomic units (OTUs) assigned to the Prevotellaceae and Campylobacteraceae family. Moreover, major archaeal OTUs associated with Methanobrevibacter and Methanosphaera were significantly affected to varying extents based on the inhibitory treatments compared to the control. The abundance of the Methanobrevibacter spp. was decreased by 3-NOP and chloroform, while the Methanomassiliicoccaceae family was inhibited only by 3-NOP. The results suggest that despite the specific mode of action of 3-NOP on methanogens, inhibition of methanogenesis by both compounds resulted in similar responses in metabolism and microbial community structure in the rumen. We hypothesized that these changes were driven by the redirection of metabolic hydrogen ([H]) by both treatments. Therefore results from previous publications using chloroform as an inhibitor of methanogenesis may be useful in predicting ruminal microbiota and fermentation responses to 3-NOP.
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Affiliation(s)
| | - Stephane Duval
- Research Centre for Animal Nutrition and Health, DSM Nutritional Products, Saint-Louis, France
| | - Maik Kindermann
- Animal Nutrition and Health, DSM Nutritional Products, Basel, Switzerland
| | - Horst J Schirra
- The University of Queensland, Centre for Advanced Imaging, Brisbane, QLD, Australia
| | - Stuart E Denman
- CSIRO, Agriculture and Food, Queensland Bioscience Precinct, St. Lucia, QLD, Australia
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Ungerfeld EM. Inhibition of Rumen Methanogenesis and Ruminant Productivity: A Meta-Analysis. Front Vet Sci 2018; 5:113. [PMID: 29971241 PMCID: PMC6018482 DOI: 10.3389/fvets.2018.00113] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 05/14/2018] [Indexed: 01/08/2023] Open
Abstract
Methane (CH4) formed in the rumen and released to the atmosphere constitutes an energy inefficiency to ruminant production. Redirecting energy in CH4 to fermentation products with a nutritional value to the host animal could increase ruminant productivity and stimulate the adoption of CH4-suppressing strategies. The hypothesis of this research was that inhibiting CH4 formation in the rumen is associated with greater ruminant productivity. The primary objective of this meta-analysis was to evaluate how inhibiting rumen methanogenesis relates with the efficiencies of milk production and growth and fattening. A systematic review of peer-reviewed studies in which rumen methanogenesis was inhibited with chemical compounds was conducted. Experiments were clustered based on research center, year of publication, experimental design, feeding regime, type of animal, production response, inhibitor of CH4 production, and method of CH4 measurement. Response variables were regressed against the random experiment effect nested in its cluster, the random effect of the cluster, the linear and quadratic effects of CH4 production, and the random interaction between CH4 production and the experiment nested in the cluster. When applicable, responses were adjusted by intake of different nutrients included as regressors. Inhibiting rumen methanogenesis tended to associate positively with milk production efficiency, although the relationship was influenced by individual experiments. Likewise, a positive relationship between methanogenesis inhibition and growth and fattening efficiency depended on the inclusion and weighting of individual experiments. Inhibiting rumen methanogenesis negatively associated with dry matter intake. Interpretation of the effects of inhibiting methanogenesis on productivity is limited by the availability of experiments simultaneously reporting energy losses in feces, H2, urine and heat production, as well as net energy partition. It is concluded that inhibiting rumen methanogenesis has not consistently translated into greater animal productivity, and more animal performance experiments are necessary to better characterize the relationships between animal productivity and methanogenesis inhibition in the rumen. A more complete understanding of changes in the flows of nutrients caused by inhibiting rumen methanogenesis and their effect on intake also seems necessary to effectively re-channel energy gained from CH4 suppression toward consistent gains in productivity.
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Affiliation(s)
- Emilio M Ungerfeld
- Coordinación de Sistemas Ganaderos, Instituto de Investigaciones Agropecuarias INIA Carillanca, Temuco, Chile
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Machado L, Tomkins N, Magnusson M, Midgley DJ, de Nys R, Rosewarne CP. In Vitro Response of Rumen Microbiota to the Antimethanogenic Red Macroalga Asparagopsis taxiformis. MICROBIAL ECOLOGY 2018; 75:811-818. [PMID: 29018917 DOI: 10.1007/s00248-017-1086-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 10/02/2017] [Indexed: 06/07/2023]
Abstract
The red macroalga Asparagopsis taxiformis has been shown to significantly decrease methane production by rumen microbial communities. This has been attributed to the bioaccumulation of halogenated methane analogues produced as algal secondary metabolites. The objective of this study was to evaluate the impact of A. taxiformis supplementation on the relative abundance of methanogens and microbial community structure during in vitro batch fermentation. Addition of A. taxiformis (2% organic matter) or the halogenated methane analogue bromoform (5 μM) reduced methane production by over 99% compared to a basal substrate-only control. Quantitative PCR confirmed that the decrease in methane production was correlated with a decrease in the relative abundance of methanogens. High-throughput 16S ribosomal RNA gene amplicon sequencing showed that both treatments reduced the abundance of the three main orders of methanogens present in ruminants (Methanobacteriales, Methanomassiliicoccales and Methanomicrobiales). Shifts in bacterial community structure due to the addition of A. taxiformis and 5 μM bromoform were similar and concomitant with increases in hydrogen concentration in the headspace of the fermenters. With high potency and broad-spectrum activity against rumen methanogens, A. taxiformis represents a promising natural strategy for reducing enteric methane emissions from ruminant livestock.
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Affiliation(s)
- Lorenna Machado
- MACRO - Centre for Macroalgal Resources and Biotechnology, College of Science and Engineering, James Cook University, Townsville, Australia.
- Centre for Macroalgal Resources and Biotechnology, College of Marine and Environmental Sciences, James Cook University, Townsville, QLD, 4811, Australia.
| | - Nigel Tomkins
- CSIRO, Australian Tropical Science and Innovation Precinct, Townsville, Australia
- Meat & Livestock Australia, 527 Gregory Terrace, Brisbane, Australia
| | - Marie Magnusson
- MACRO - Centre for Macroalgal Resources and Biotechnology, College of Science and Engineering, James Cook University, Townsville, Australia
| | | | - Rocky de Nys
- MACRO - Centre for Macroalgal Resources and Biotechnology, College of Science and Engineering, James Cook University, Townsville, Australia
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Henderson G, Cook GM, Ronimus RS. Enzyme- and gene-based approaches for developing methanogen-specific compounds to control ruminant methane emissions: a review. ANIMAL PRODUCTION SCIENCE 2018. [DOI: 10.1071/an15757] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Methane emissions from ruminants are of worldwide concern due to their potential to adversely affect climate patterns. Methane emissions can be mitigated in several ways, including dietary manipulation, the use of alternative hydrogen sinks, and by the direct inhibition of methanogens. In the present review, we summarise and emphasise studies where defined chemically synthesised compounds have been used to mitigate ruminant methane emissions by direct targeting of methanogens and discuss the future potential of such inhibitors. We also discuss experiments, where methanogen-specific enzymes and pure cultures of methanobacterial species have been used to aid development of inhibitors. Application of certain compounds can result in dramatic reductions of methane emissions from ruminant livestock, demonstrating ‘proof of principle’ of chemical inhibitors of methanogenesis. More recently, genome sequencing of rumen methanogens has enabled an in-depth analysis of the enzymatic pathways required for methane formation. Chemogenomic methods, similar to those used in the fight against cancer and infectious diseases, can now be used to specifically target a pathway or enzyme in rumen methanogens. However, few rumen methanogen enzymes have been structurally or biochemically characterised. Any compound, whether natural or man-made, that is used as a mitigation strategy will need to be non-toxic to the host animal (and humans), cost-effective, environmentally friendly, and not accumulate in host tissues or milk products. Chemically synthesised inhibitors offer potentially significant advantages, including high levels of sustained inhibition, the ability to be easily and rapidly produced for global markets, and have the potential to be incorporated into slow-release vehicles for grazing animals.
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Leng RA. Unravelling methanogenesis in ruminants, horses and kangaroos: the links between gut anatomy, microbial biofilms and host immunity. ANIMAL PRODUCTION SCIENCE 2018. [DOI: 10.1071/an15710] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The present essay aims to resolve the question as to why macropod marsupials (e.g. kangaroos and wallabies, hereinafter termed ‘macropods) and horses produce much less methane (CH4) than do ruminants when digesting the same feed. In herbivores, gases produced during fermentation of fibrous feeds do not pose a major problem in regions of the gut that have mechanisms to eliminate them (e.g. eructation in the rumen and flatus in the lower bowel). In contrast, gas pressure build-up in the tubiform forestomach of macropods or in the enlarged tubiform caecum of equids would be potentially damaging. It is hypothesised that, to prevent this problem, evolution has favoured development of controls over gut microbiota that enable enteric gas production (H2 and CH4) to be differently regulated in the forestomach of macropods and the caecum of all three species, from the forestomach of ruminants. The hypothesised regulation depends on interactions between their gut anatomy and host-tissue immune responses that have evolved to modify the species composition of their gut microbiota which, importantly, are mainly in biofilms. Obligatory H2 production during forage fermentation is, thus, captured in CH4 in the ruminant where ruminal gases are readily released by eructation, or in acetate in the macropod forestomach and equid caecum–colon where a build-up in gas pressure could potentially damage these organs. So as to maintain appropriate gut microbiota in different species, it is hypothesised that blind sacs at the cranial end of the haustral anatomy of the macropod forestomach and the equid caecum are sites of release of protobiofilm particles that develop in close association with the mucosal lymphoid tissues. These tissues release immune secretions such as antimicrobial peptides, immunoglobulins, innate lymphoid cells and mucin that eliminate or suppress methanogenic Archaea and support the growth of acetogenic microbiota. The present review draws on microbiological studies of the mammalian gut as well as other microbial environments. Hypotheses are advanced to account for published findings relating to the gut anatomy of herbivores and humans, the kinetics of digesta in ruminants, macropods and equids, and also the composition of biofilm microbiota in the human gut as well as aquatic and other environments where the microbiota exist in biofilms.
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Martinez-Fernandez G, Denman SE, Cheung J, McSweeney CS. Phloroglucinol Degradation in the Rumen Promotes the Capture of Excess Hydrogen Generated from Methanogenesis Inhibition. Front Microbiol 2017; 8:1871. [PMID: 29051749 PMCID: PMC5633678 DOI: 10.3389/fmicb.2017.01871] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 09/13/2017] [Indexed: 11/21/2022] Open
Abstract
Strategies to manage metabolic hydrogen ([H]) in the rumen should be considered when reducing ruminant methane (CH4) emissions. However, little is known about the use of dietary treatments to stimulate rumen microorganisms capable of capturing the [H] available when CH4 is inhibited in vivo. The effects of the phenolic compound phloroglucinol on CH4 production, [H] flows and subsequent responses in rumen fermentation and microbial community composition when methanogenesis is inhibited were investigated in cattle. Eight rumen fistulated Brahman steers were randomly allocated in two groups receiving chloroform as an antimethanogenic compound for 21 days. Following that period one group received chloroform + phloroglucinol for another 16 days, whilst the other group received only chloroform during the same period. The chloroform treatment resulted in a decrease in CH4 production and an increase in H2 expelled with a shift in rumen fermentation toward higher levels of propionate and formate and lower levels of acetate at day 21 of treatment. Bacterial operational taxonomic units (OTUs) assigned to Prevotella were promoted whilst Archaea and Synergistetes OTUs were decreased with the chloroform treatment as expected. The shift toward formate coincided with increases in Ruminococcus flavefaciens, Butyrivibrio fibrisolvens, and Methanobrevibacter ruminantium species. The addition of chloroform + phloroglucinol in the rumen resulted in a decrease of H2 expelled (g) per kg of DMI and moles of H2 expelled per mol of CH4 decreased compared with the chloroform only treated animals. A shift toward acetate and a decrease in formate were observed for the chloroform + phloroglucinol-treated animals at day 37. These changes in the rumen fermentation profile were accompanied by a relative increase of OTUs assigned to Coprococcus spp., which could suggest this genus is a significant contributor to the metabolism of this phenolic compound in the rumen. This study demonstrates for the first time in vivo that under methanogenesis inhibition, H2 gas accumulation can be decreased by redirecting [H] toward alternative sinks through the nutritional stimulation of specific microbial groups. This results in the generation of metabolites of value for the host while also helping to maintain a low H2 partial pressure in the methane-inhibited rumen.
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Affiliation(s)
- Gonzalo Martinez-Fernandez
- Commonwealth Scientific and Industrial Research Organisation, Agriculture and Food, Queensland Bioscience Precinct, St Lucia, QLD, Australia
| | - Stuart E Denman
- Commonwealth Scientific and Industrial Research Organisation, Agriculture and Food, Queensland Bioscience Precinct, St Lucia, QLD, Australia
| | - Jane Cheung
- Commonwealth Scientific and Industrial Research Organisation, Agriculture and Food, Queensland Bioscience Precinct, St Lucia, QLD, Australia
| | - Christopher S McSweeney
- Commonwealth Scientific and Industrial Research Organisation, Agriculture and Food, Queensland Bioscience Precinct, St Lucia, QLD, Australia
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Molecular hydrogen generated by elemental magnesium supplementation alters rumen fermentation and microbiota in goats. Br J Nutr 2017; 118:401-410. [PMID: 28927478 DOI: 10.1017/s0007114517002161] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We tested the hypotheses that supplementation of a diet with elemental Mg increases ruminal dissolved H2 (dH2) in rumen fluid, which in turn alters rumen fermentation and microbial community in goats. In a randomised block design, twenty growing goats were allocated to two treatments fed the same basal diet with 1·45 % Mg(OH)2 or 0·6 % elemental Mg. After 28 d of adaptation, we collected total faeces to measure total tract digestibility, rumen contents to analyse fermentation end products and microbial groups, and measured methane (CH4) emission using respiration chambers. Ruminal Mg2+ concentration was similar in both treatments. Elemental Mg supplementation increased dH2 at 2·5 h post morning feeding (+180 %, P<0·001). Elemental Mg supplementation decreased total volatile fatty acid concentration (-8·6 %, P<0·001), the acetate:propionate ratio (-11·8 %, P<0·03) and fungal copy numbers (-63·6 %, P=0·006), and increased propionate molar percentage (+11·6 %, P<0·001), methanogen copy numbers (+47·9 %, P<0·001), dissolved CH4 (+35·6 %, P<0·001) and CH4 emissions (+11·7 %, P=0·03), compared with Mg(OH)2 supplementation. The bacterial community composition in both treatments was overall similar. Ruminal dH2 was negatively correlated with acetate molar percentage and fungal copy numbers (P<0·05), and positively correlated with propionate molar percentage and methanogen copy numbers (P<0·05). In summary, elemental Mg supplementation increased ruminal dH2 concentration, which inhibited rumen fermentation, enhanced methanogenesis and seemed to shift fermentation pathways from acetate to propionate, and altered microbiota by decreasing fungi and increasing methanogens.
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Development of Multiwell-Plate Methods Using Pure Cultures of Methanogens To Identify New Inhibitors for Suppressing Ruminant Methane Emissions. Appl Environ Microbiol 2017; 83:AEM.00396-17. [PMID: 28526787 DOI: 10.1128/aem.00396-17] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 05/09/2017] [Indexed: 12/30/2022] Open
Abstract
Hydrogenotrophic methanogens typically require strictly anaerobic culturing conditions in glass tubes with overpressures of H2 and CO2 that are both time-consuming and costly. To increase the throughput for screening chemical compound libraries, 96-well microtiter plate methods for the growth of a marine (environmental) methanogen Methanococcus maripaludis strain S2 and the rumen methanogen Methanobrevibacter species AbM4 were developed. A number of key parameters (inoculum size, reducing agents for medium preparation, assay duration, inhibitor solvents, and culture volume) were optimized to achieve robust and reproducible growth in a high-throughput microtiter plate format. The method was validated using published methanogen inhibitors and statistically assessed for sensitivity and reproducibility. The Sigma-Aldrich LOPAC library containing 1,280 pharmacologically active compounds and an in-house natural product library (120 compounds) were screened against M. maripaludis as a proof of utility. This screen identified a number of bioactive compounds, and MIC values were confirmed for some of them against M. maripaludis and M. AbM4. The developed method provides a significant increase in throughput for screening compound libraries and can now be used to screen larger compound libraries to discover novel methanogen-specific inhibitors for the mitigation of ruminant methane emissions.IMPORTANCE Methane emissions from ruminants are a significant contributor to global greenhouse gas emissions, and new technologies are required to control emissions in the agriculture technology (agritech) sector. The discovery of small-molecule inhibitors of methanogens using high-throughput phenotypic (growth) screening against compound libraries (synthetic and natural products) is an attractive avenue. However, phenotypic inhibitor screening is currently hindered by our inability to grow methanogens in a high-throughput format. We have developed, optimized, and validated a high-throughput 96-well microtiter plate assay for growing environmental and rumen methanogens. Using this platform, we identified several new inhibitors of methanogen growth, demonstrating the utility of this approach to fast track the development of methanogen-specific inhibitors for controlling ruminant methane emissions.
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