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Alatas MS, Arık H, Gulsen N, Kahraman O. Effects of <i>Entodinium caudatum</i> monocultures in an acidotic
environment on <i>in vitro</i> rumen fermentation. JOURNAL OF ANIMAL AND FEED SCIENCES 2022. [DOI: 10.22358/jafs/152643/2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Essential Oils as a Dietary Additive for Small Ruminants: A Meta-Analysis on Performance, Rumen Parameters, Serum Metabolites, and Product Quality. Vet Sci 2022; 9:vetsci9090475. [PMID: 36136691 PMCID: PMC9502430 DOI: 10.3390/vetsci9090475] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/27/2022] [Accepted: 08/27/2022] [Indexed: 11/17/2022] Open
Abstract
There is an increasing pressure to identify natural feed additives that improve the productivity and health of livestock, without affecting the quality of derived products. The objective of this study was to evaluate the effects of dietary supplementation with essential oils (EOs) on productive performance, rumen parameters, serum metabolites, and quality of products (meat and milk) derived from small ruminants by means of a meta-analysis. Seventy-four peer-reviewed publications were included in the data set. Weighted mean differences (WMD) between the EOs treatments and the control treatment were used to assess the magnitude of effect. Dietary inclusion of EOs increased (p < 0.05) dry matter intake (WMD = 0.021 kg/d), dry matter digestibility (WMD = 14.11 g/kg of DM), daily weight gain (WMD = 0.008 kg/d), and feed conversion ratio (WMD = −0.111). The inclusion of EOs in small ruminants’ diets decreased (p < 0.05) ruminal ammonia nitrogen concentration (WMD = −0.310 mg/dL), total protozoa (WMD = −1.426 × 105/mL), methanogens (WMD = −0.60 × 107/mL), and enteric methane emissions (WMD = −3.93 L/d) and increased ruminal propionate concentration (WMD = 0.726 mol/100 mol, p < 0.001). The serum urea concentration was lower (WMD = −0.688 mg/dL; p = 0.009), but serum catalase (WMD = 0.204 ng/mL), superoxide dismutase (WMD = 0.037 ng/mL), and total antioxidant capacity (WMD = 0.749 U/mL) were higher (p < 0.05) in response to EOs supplementation. In meat, EOs supplementation decreased (p < 0.05) the cooking loss (WMD = −0.617 g/100 g), malondialdehyde content (WMD = −0.029 mg/kg of meat), yellowness (WMD = −0.316), and total viable bacterial count (WMD = −0.780 CFU/g of meat). There was higher (p < 0.05) milk production (WMD = 0.113 kg/d), feed efficiency (WMD = 0.039 kg/kg), protein (WMD = 0.059 g/100 g), and lactose content in the milk (WMD = 0.100 g/100 g), as well as lower somatic cell counts in milk (WMD = −0.910 × 103 cells/mL) in response to EOs supplementation. In conclusion, dietary supplementation with EOs improves productive performance as well as meat and milk quality of small ruminants. In addition, EOs improve antioxidant status in blood serum and rumen fermentation and decrease environmental impact.
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Jiménez-Ocampo R, Montoya-Flores MD, Pamanes-Carrasco G, Herrera-Torres E, Arango J, Estarrón-Espinosa M, Aguilar-Pérez CF, Araiza-Rosales EE, Guerrero-Cervantes M, Ku-Vera JC. Impact of orange essential oil on enteric methane emissions of heifers fed bermudagrass hay. Front Vet Sci 2022; 9:863910. [PMID: 36051539 PMCID: PMC9424680 DOI: 10.3389/fvets.2022.863910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 07/26/2022] [Indexed: 11/13/2022] Open
Abstract
In this study, the effects of orange essential oil (OEO) on the rumen fermentation, nutrient utilization, and methane (CH4) emissions of beef heifers fed a diet of bermudagrass (Cynodon dactylon) were examined. In addition, in vitro and in situ experiments were conducted. The in vitro experiment consisted of three treatments: control (CTL, no OEO), OEO1 (0.25% OEO), and OEO2 (0.5% OEO). The forage to concentrate ratio was 70:30 (dry matter [DM] basis) in all treatments. No changes in pH, proportions of volatile fatty acids, and the acetate:propionate ratio were observed (P > 0.05). The addition of 0.25% OEO resulted in a reduction in CH4 production (mL/g) relative to the control (P < 0.05). In the in situ experiment, 5 g of total mixed ration (CTL, OEO1, and OEO2) were incubated for 6, 12, 24, 48, and 72 h. Potential and effective degradability were not affected by OEO supplementation (P > 0.05). In the in vivo study, six crossbred beef heifers (Bos indicus × Bos taurus), fitted with rumen cannulas, were assigned to three different treatments: no additive (CTL), 0.25% OEO (OEO1), and 0.5% OEO (OEO2) in a replicated 3 × 3 Latin square (21-day periods). Heifers were fed at 2.8% body weight. In vivo CH4 production was measured in open-circuit respiration chambers. Reductions in gross energy consumption, apparent total tract digestibility, and rumen valerate concentration were observed for OEO2 compared to the control (P < 0.05). Additionally, decreases in CH4 emissions (g/day; P < 0.05) and CH4 (MJ gross energy intake/day; P < 0.05) were observed in response to supplementation of 0.5% OEO as compared to the CTL treatment. Thus, supplementation of 0.5% OEO reduced CH4 emissions (g/day) by 12% without impacting the DM intake of heifers fed bermudagrass hay as a basal ration.
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Affiliation(s)
- Rafael Jiménez-Ocampo
- Laboratory of Climate Change and Livestock Production, Department of Animal Nutrition, Faculty of Veterinary Medicine and Animal Science, University of Yucatan, Mérida, Yucatan, Mexico
- National Institute of Research in Forestry, Agriculture and Livestock-INIFAP, Experimental Field Valle del Guadiana, Durango, Mexico
- *Correspondence: Rafael Jiménez-Ocampo
| | - María D. Montoya-Flores
- National Center for Disciplinary Research in Physiology and Animal Breeding, National Institute for Forestry, Agriculture and Livestock Research-INIFAP, Queretaro, Mexico
| | - Gerardo Pamanes-Carrasco
- Institute of Silviculture and Wood Industry, National Council of Science and Technology—Durango State Juarez University, Durango, Mexico
| | | | - Jacobo Arango
- Tropical Forage Program—International Center for Tropical Agriculture (CIAT), Palmira, Colombia
| | - Mirna Estarrón-Espinosa
- Food Technology Unit, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, Jalisco, Mexico
| | - Carlos F. Aguilar-Pérez
- Laboratory of Climate Change and Livestock Production, Department of Animal Nutrition, Faculty of Veterinary Medicine and Animal Science, University of Yucatan, Mérida, Yucatan, Mexico
| | - Elia E. Araiza-Rosales
- Department of Animal Nutrition, National Council of Science and Technology—Durango State Juarez University, Durango, Mexico
| | - Maribel Guerrero-Cervantes
- Department of Small Ruminant Nutrition, Faculty of Veterinary Medicine and Animal Science, Durango State Juarez University, Durango, Mexico
| | - Juan C. Ku-Vera
- Laboratory of Climate Change and Livestock Production, Department of Animal Nutrition, Faculty of Veterinary Medicine and Animal Science, University of Yucatan, Mérida, Yucatan, Mexico
- Juan C. Ku-Vera
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Cappelli K, Sabino M, Trabalza-Marinucci M, Acuti G, Capomaccio S, Menghini L, Verini-Supplizi A. Differential Effects of Dietary Oregano Essential Oil on the Inflammation Related Gene Expression in Peripheral Blood Mononuclear Cells From Outdoor and Indoor Reared Pigs. Front Vet Sci 2021; 8:602811. [PMID: 33718464 PMCID: PMC7946822 DOI: 10.3389/fvets.2021.602811] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 02/01/2021] [Indexed: 12/11/2022] Open
Abstract
Intensive farming systems represent a stressful environment for pigs and negatively influence neuroendocrine functions, behavior, and performance. Outdoor farming is an alternative option, which is thought to imply several beneficial effects for the animal. Dietary essential oils are known to be an innovative strategy to improve pig health and performance, and oregano essential oil (ORE) possesses beneficial effects due to its antimicrobial, anti-fungal, and antioxidant properties. We tested the effect of dietary ORE on peripheral blood mononuclear cells (PBMCs) in 36 growing pigs, either reared under indoor or outdoor conditions. Quantitative real-time PCR (RT-qPCR) assay was used to evaluate the effect of diet (control vs. ORE) and the time of sampling (T1-120 days vs. T2-190 days) on the expression of inflammatory and immune-related genes (TNF, IL1β, IL8, IL18, IL10, IL1RN, STAT3, HSP90, ICAM-1, and NFKB1). Under outdoor condition, the majority of transcripts were upregulated (p < 0.05), assuming a general inflammatory status (TNF, HSP90, NFKB1, IL1β, and STAT3). However, an interaction between diet and the farming system was observed: HSP90, NFKB1, and STAT3 were downregulated (p < 0.05) in the outdoor reared pigs when fed the ORE diet. Our study showed that bioactive compounds of ORE exert their activity, especially when the animals are exposed to stressful stimuli. Dietary ORE can be an acceptable strategy to help pigs tolerate the stress related to the harsh, outdoor, rearing conditions.
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Affiliation(s)
- Katia Cappelli
- Dipartimento di Medicina Veterinaria, University of Perugia, Perugia, Italy
| | - Marcella Sabino
- Dipartimento di Medicina Veterinaria, University of Perugia, Perugia, Italy
| | | | - Gabriele Acuti
- Dipartimento di Medicina Veterinaria, University of Perugia, Perugia, Italy
| | - Stefano Capomaccio
- Dipartimento di Medicina Veterinaria, University of Perugia, Perugia, Italy
| | - Luigi Menghini
- Dipartimento di Farmacia, University of Chieti, Chieti, Italy
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Oliveira MRCDE, Echeverria L, Martinez AC, Goes RHTBDE, Scanavacca J, Barros BCB. Safflower seed supplementation in lamb feed: effects upon fatty acid profile and quality of meat patty formulations. AN ACAD BRAS CIENC 2021; 93:e20190903. [PMID: 33533801 DOI: 10.1590/0001-3765202120190903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 12/18/2019] [Indexed: 11/22/2022] Open
Abstract
The aims of this study were to determine the fatty acid profile of meat from lambs fed with different levels of safflower seed (0%, 7.5%, and 15%) and, also, to compare the characteristics of the meat patties prepared from this lamb meat (LMP) with beef meat patties (BMP). The safflower seed-supplemented diet did not change the contents of polyunsaturated and unsaturated fatty acids, except for C22:1. All meat patty formulations were considered safe for consumption. The values of cooking yield, shrinkage, water absorption index, luminosity (L*), and redness (a*) were similar for the LMP and BMP tested. While the safflower seed-supplemented diet did not alter the moisture, ash, and protein levels of LMP, the lipid content was lower than that in BMP. The incorporation of 15% safflower seed into lamb feed contributed to promoting better sensory attributes of the meat patties. Most of the physicochemical properties evaluated were similar among LMP and BMP. However, to improve the sensory properties of the product, dietary supplementation with 15% safflower seed is recommended.
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Affiliation(s)
- Mitally Rayana C DE Oliveira
- Maringá State University, Departament of Technology, Avenida Ângelo Moreira da Fonseca, 1800, Parque Danielle, 87506-370 Umuarama, PR, Brazil
| | - Larissa Echeverria
- Maringá State University, Departament of Technology, Avenida Ângelo Moreira da Fonseca, 1800, Parque Danielle, 87506-370 Umuarama, PR, Brazil
| | - Antonio C Martinez
- Maringá State University, Departament of Veterinary Medicine, Estrada da Paca s/n, São Cristóvão, 87502-970 Umuarama, PR, Brazil
| | - Rafael Henrique T B DE Goes
- Federal University of Grande Dourados (UFGD), Department of Animal Science, Rod. Dourados-Itahum, Km 12, 79804-970 Dourados, MS, Brazil
| | - Juliana Scanavacca
- Maringá State University, Departament of Technology, Avenida Ângelo Moreira da Fonseca, 1800, Parque Danielle, 87506-370 Umuarama, PR, Brazil
| | - Beatriz C B Barros
- Maringá State University, Departament of Technology, Avenida Ângelo Moreira da Fonseca, 1800, Parque Danielle, 87506-370 Umuarama, PR, Brazil
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Güney M, Karaca S, Erdogan S, Kor A, Kale C, Onalan S, Demirel M, Bingol NT. Effects of dietary supplementation with rosemary oil on methanogenic bacteria density, blood and rumen parameters and meat quality of fattening lambs. ITALIAN JOURNAL OF ANIMAL SCIENCE 2021. [DOI: 10.1080/1828051x.2021.1906165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Mehtap Güney
- Department of Animal Science, Van Yuzuncu Yil University, Van, Turkey
| | - Serhat Karaca
- Department of Animal Science, Van Yuzuncu Yil University, Van, Turkey
| | - Sibel Erdogan
- Department of Animal Science, Van Yuzuncu Yil University, Van, Turkey
| | - Askin Kor
- Department of Animal Science, Van Yuzuncu Yil University, Van, Turkey
| | - Cagri Kale
- Department of Animal Nutrition and Nutritional Diseases, Van Yuzuncu Yil University, Van, Turkey
| | - Sukru Onalan
- Department of Fish Diseases, Van Yuzuncu Yil University, Van, Turkey
| | - Murat Demirel
- Department of Animal Science, Van Yuzuncu Yil University, Van, Turkey
| | - Nuriye Tugba Bingol
- Department of Animal Nutrition and Nutritional Diseases, Van Yuzuncu Yil University, Van, Turkey
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Napoli E, Siracusa L, Ruberto G. New Tricks for Old Guys: Recent Developments in the Chemistry, Biochemistry, Applications and Exploitation of Selected Species from the Lamiaceae Family. Chem Biodivers 2020; 17:e1900677. [PMID: 31967708 DOI: 10.1002/cbdv.201900677] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 01/21/2020] [Indexed: 12/13/2022]
Abstract
Lamiaceae is one of the largest families of flowering plants comprising about 250 genera and over 7,000 species. Most of the plants of this family are aromatic and therefore important source of essential oils. Lamiaceae are widely used as culinary herbs and reported as medicinal plants in several folk traditions. In the Mediterranean area oregano, sage, rosemary, thyme and lavender stand out for geographical diffusion and variety of uses. The aim of this review is to provide recent data dealing with the phytochemical and pharmacological studies, and the more recent applications of the essential oils and the non-volatile phytocomplexes. This literature survey suggests how the deeper understanding of biomolecular processes in the health and food sectors as per as pest control bioremediation of cultural heritage, or interaction with human microbiome, fields, leads to the rediscovery and new potential applications of well-known plants.
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Affiliation(s)
- Edoardo Napoli
- Istituto del CNR di Chimica Biomolecolare, Via Paolo Gaifami, 18, IT-95126, Catania, Italy
| | - Laura Siracusa
- Istituto del CNR di Chimica Biomolecolare, Via Paolo Gaifami, 18, IT-95126, Catania, Italy
| | - Giuseppe Ruberto
- Istituto del CNR di Chimica Biomolecolare, Via Paolo Gaifami, 18, IT-95126, Catania, Italy
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Sharifi-Rad J, Ezzat SM, El Bishbishy MH, Mnayer D, Sharopov F, Kılıç CS, Neagu M, Constantin C, Sharifi-Rad M, Atanassova M, Nicola S, Pignata G, Salehi B, Fokou PVT, Martins N. Rosmarinus plants: Key farm concepts towards food applications. Phytother Res 2020; 34:1474-1518. [PMID: 32058653 DOI: 10.1002/ptr.6622] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/18/2019] [Accepted: 01/14/2020] [Indexed: 12/22/2022]
Abstract
Rosmarinus species are aromatic plants that mainly grow in the Mediterranean region. They are widely used in folk medicine, food, and flavor industries and represent a valuable source of biologically active compounds (e.g., terpenoids, flavonoids, and phenolic acids). The extraction of rosemary essential oil is being done using three main methods: carbon dioxide supercritical extraction, steam distillation, and hydrodistillation. Furthermore, interesting antioxidant, antibacterial, antifungal, antileishmanial, anthelmintic, anticancer, anti-inflammatory, antidepressant, and antiamnesic effects have also been broadly recognized for rosemary plant extracts. Thus the present review summarized data on economically important Rosmarinus officinalis species, including isolation, extraction techniques, chemical composition, pharmaceutical, and food applications.
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Affiliation(s)
- Javad Sharifi-Rad
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shahira M Ezzat
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt.,Department of Pharmacognosy, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza, 11787, Egypt
| | - Mahitab H El Bishbishy
- Department of Pharmacognosy, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza, 11787, Egypt
| | - Dima Mnayer
- Faculty of Sciences, Lebanese University, Beirut, Lebanon
| | - Farukh Sharopov
- Department of Pharmaceutical Technology, Avicenna Tajik State Medical University, Dushanbe, Tajikistan
| | - Ceyda S Kılıç
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - Monica Neagu
- Immunology Department, "Victor Babes" National Institute of Pathology, Bucharest, Romania.,Pathology Department, "Colentina" Clinical Hospital, Bucharest, Romania.,Doctoral School, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Carolina Constantin
- Immunology Department, "Victor Babes" National Institute of Pathology, Bucharest, Romania.,Pathology Department, "Colentina" Clinical Hospital, Bucharest, Romania
| | - Mehdi Sharifi-Rad
- Department of Medical Parasitology, Kerman University of Medical Sciences, Kerman, Iran
| | - Maria Atanassova
- Scientific Consulting, Chemical Engineering, UCTM, Sofia, Bulgaria
| | - Silvana Nicola
- Department of Agricultural, Forest and Food Sciences, University of Turin, Turin, Italy
| | - Giuseppe Pignata
- Department of Agricultural, Forest and Food Sciences, University of Turin, Turin, Italy
| | - Bahare Salehi
- Student Research Committee, School of Medicine, Bam University of Medical Sciences, Bam, Iran
| | - Patrick V T Fokou
- Antimicrobial and Biocontrol Agents Unit, Department of Biochemistry, Faculty of Science, University of Yaounde 1, Yaounde, Cameroon
| | - Natália Martins
- Faculty of Medicine, University of Porto, Porto, Portugal.,Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
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Cobellis G, Yu Z, Forte C, Acuti G, Trabalza-Marinucci M. Dietary supplementation of Rosmarinus officinalis L. leaves in sheep affects the abundance of rumen methanogens and other microbial populations. J Anim Sci Biotechnol 2016; 7:27. [PMID: 27123239 PMCID: PMC4847361 DOI: 10.1186/s40104-016-0086-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 04/17/2016] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Rumen microbiome has a great influence on ruminant health and productivity. Different plant extracts have been tested for their ability to modulate the rumen microbiome to improve feed digestion and fermentation. Among the evaluated plant extracts, essential oils, tannins, and saponins appeared to have positive effects on rumen protein metabolism, volatile fatty acids production, and methane and ammonia production. METHODS The objective of this study was to evaluate the effect of rosemary (Rosmarinus officinalis L.) leaves and essential oils on rumen microbial populations. Four ruminally cannulated sheep were used in a 4×4 Latin square design fed (21 d/period): 1) a control diet composed of alfalfa hay and concentrate pellet (CTR), 2) CTR supplemented with 7 g/d/sheep of rosemary essential oil adsorbed on an inert support (EO), 3) CTR with 10 g/d/sheep of dried and ground rosemary leaves (RL), and 4) CTR with 10 g/d of dried and ground rosemary leaves pelleted into concentrate (RL pellet). Abundance of total bacteria, archaea, protozoa, and some select bacterial species or groups was quantified using qPCR, while the community of bacteria and archaea was profiled using denaturing gradient gel electrophoresis. RESULTS No difference in abundance was noted for total bacteria, protozoa, or Ruminococcus flavefaciens between the control and the treatments, but the rosemary leaves, either in loose form or in pellet, decreased the abundance of archaea and the genus Prevotella (P < 0.001). The rosemary leaves in loose form also decreased (P < 0.001) the abundance of Ruminococcus albus and Clostridium aminophilum, while the EO increased (P < 0.001) the abundance of Fibrobacter succinogenes. The community of bacteria and archaea was not affected by any of the supplements. CONCLUSIONS Being able to affect the abundance of several groups of rumen microbes that are known to be involved in degradation of protein and fiber and production of methane and ammonia, rosemary leaves may be used to modulate rumen microbiome and its function.
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Affiliation(s)
- Gabriella Cobellis
- Department of Veterinary Medicine, University of Perugia, via S. Costanzo 4, 06126 Perugia, Italy ; Department of Animal Sciences, The Ohio State University, 2029 Fyffe Road, Columbus, OH 43210 USA
| | - Zhongtang Yu
- Department of Animal Sciences, The Ohio State University, 2029 Fyffe Road, Columbus, OH 43210 USA
| | - Claudio Forte
- Department of Veterinary Medicine, University of Perugia, via S. Costanzo 4, 06126 Perugia, Italy
| | - Gabriele Acuti
- Department of Veterinary Medicine, University of Perugia, via S. Costanzo 4, 06126 Perugia, Italy
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Cobellis G, Trabalza-Marinucci M, Yu Z. Critical evaluation of essential oils as rumen modifiers in ruminant nutrition: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 545-546:556-68. [PMID: 26760275 DOI: 10.1016/j.scitotenv.2015.12.103] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 12/21/2015] [Accepted: 12/21/2015] [Indexed: 05/22/2023]
Abstract
Ruminant livestock systems contribute significantly to emission of methane, a potent greenhouse gas as they waste a portion of the ingested energy (2-15%) as methane and a large proportion (75-95%) of the ingested nitrogen as ammonia. Recently, numerous researches have been conducted to evaluate plant secondary metabolites, including essential oils (EO), as natural feed additives in ruminant nutrition and to exploit their potential to improve rumen fermentation efficiency. Essential oils appeared to be very promising compounds as they selectively reduced methane production and protein breakdown in both in vitro and in vivo studies. However, in some studies, the use of EO as feed additives was accompanied with decreased feed degradability and lowered volatile fatty acid. These adverse effects could be attributed to their broad and often non-specific antimicrobial activities within the rumen. Future research should be directed to identification of the active and useful EO compounds, optimization of EO doses, and use of a whole-farm approach with a focus on animal welfare, performance and economic benefits.
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Affiliation(s)
- Gabriella Cobellis
- Dipartimento di Medicina Veterinaria, Università degli Studi di Perugia, Perugia, Italy; Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA.
| | | | - Zhongtang Yu
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43210, USA
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Evaluation of the Effects of Mitigation on Methane and Ammonia Production by Using Origanum vulgare L. and Rosmarinus officinalis L. Essential Oils on in Vitro Rumen Fermentation Systems. SUSTAINABILITY 2015. [DOI: 10.3390/su70912856] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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