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Aruwa CE, Sabiu S. Interplay of poultry-microbiome interactions - influencing factors and microbes in poultry infections and metabolic disorders. Br Poult Sci 2024:1-15. [PMID: 38920059 DOI: 10.1080/00071668.2024.2356666] [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: 01/31/2024] [Accepted: 03/06/2024] [Indexed: 06/27/2024]
Abstract
1. The poultry microbiome and its stability at every point in time, either free range or reared under different farming systems, is affected by several environmental and innate factors. The interaction of the poultry birds with their microbiome, as well as several inherent and extraneous factors contribute to the microbiome dynamics. A poor understanding of this could worsen poultry heath and result in disease/metabolic disorders.2. Many diseased states associated with poultry have been linked to dysbiosis state, where the microbiome experiences some perturbation. Dysbiosis itself is too often downplayed; however, it is considered a disease which could lead to more serious conditions in poultry. The management of interconnected factors by conventional and emerging technologies (sequencing, nanotechnology, robotics, 3D mini-guts) could prove to be indispensable in ensuring poultry health and welfare.3. Findings showed that high-throughput technological advancements enhanced scientific insights into emerging trends surrounding the poultry gut microbiome and ecosystem, the dysbiotic condition, and the dynamic roles of intrinsic and exogenous factors in determining poultry health. Yet, a combination of conventional, -omics based and other techniques further enhance characterisation of key poultry microbiome actors, their mechanisms of action, and roles in maintaining gut homoeostasis and health, in a bid to avert metabolic disorders and infections.4. In conclusion, there is an important interplay of innate, environmental, abiotic and biotic factors impacting on poultry gut microbiome homoeostasis, dysbiosis, and overall health. Associated infections and metabolic disorders can result from the interconnected nature of these factors. Emerging concepts (interkingdom or network signalling and neurotransmitter), and future technologies (mini-gut models, cobots) need to include these interactions to ensure accurate control and outcomes.
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Affiliation(s)
- C E Aruwa
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, Durban, South Africa
| | - S Sabiu
- Department of Biotechnology and Food Science, Faculty of Applied Sciences, Durban University of Technology, Durban, South Africa
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2
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Oladokun S, Sharif S. Exploring the complexities of poultry respiratory microbiota: colonization, composition, and impact on health. Anim Microbiome 2024; 6:25. [PMID: 38711114 DOI: 10.1186/s42523-024-00308-5] [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: 10/05/2023] [Accepted: 04/08/2024] [Indexed: 05/08/2024] Open
Abstract
An accurate understanding of the ecology and complexity of the poultry respiratory microbiota is of utmost importance for elucidating the roles of commensal or pathogenic microorganisms in the respiratory tract, as well as their associations with health or disease outcomes in poultry. This comprehensive review delves into the intricate aspects of the poultry respiratory microbiota, focusing on its colonization patterns, composition, and impact on poultry health. Firstly, an updated overview of the current knowledge concerning the composition of the microbiota in the respiratory tract of poultry is provided, as well as the factors that influence the dynamics of community structure and diversity. Additionally, the significant role that the poultry respiratory microbiota plays in economically relevant respiratory pathobiologies that affect poultry is explored. In addition, the challenges encountered when studying the poultry respiratory microbiota are addressed, including the dynamic nature of microbial communities, site-specific variations, the need for standardized protocols, the appropriate sequencing technologies, and the limitations associated with sampling methodology. Furthermore, emerging evidence that suggests bidirectional communication between the gut and respiratory microbiota in poultry is described, where disturbances in one microbiota can impact the other. Understanding this intricate cross talk holds the potential to provide valuable insights for enhancing poultry health and disease control. It becomes evident that gaining a comprehensive understanding of the multifaceted roles of the poultry respiratory microbiota, as presented in this review, is crucial for optimizing poultry health management and improving overall outcomes in poultry production.
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Affiliation(s)
- Samson Oladokun
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON, N1G 2W1, Canada
| | - Shayan Sharif
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON, N1G 2W1, Canada.
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3
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Kairmi SH, Abdelaziz K, Spahany H, Astill J, Trott D, Wang B, Wang A, Parkinson J, Sharif S. Intestinal microbiome profiles in broiler chickens raised without antibiotics exhibit altered microbiome dynamics relative to conventionally raised chickens. PLoS One 2024; 19:e0301110. [PMID: 38568936 PMCID: PMC10990180 DOI: 10.1371/journal.pone.0301110] [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: 10/28/2023] [Accepted: 03/08/2024] [Indexed: 04/05/2024] Open
Abstract
The present study was undertaken to profile and compare the cecal microbial communities in conventionally (CONV) grown and raised without antibiotics (RWA) broiler chickens. Three hundred chickens were collected from five CONV and five RWA chicken farms on days 10, 24, and 35 of age. Microbial genomic DNA was extracted from cecal contents, and the V4-V5 hypervariable regions of the 16S rRNA gene were amplified and sequenced. Analysis of 16S rRNA sequence data indicated significant differences in the cecal microbial diversity and composition between CONV and RWA chickens on days 10, 24, and 35 days of age. On days 10 and 24, CONV chickens had higher richness and diversity of the cecal microbiome relative to RWA chickens. However, on day 35, this pattern reversed such that RWA chickens had higher richness and diversity of the cecal microbiome than the CONV groups. On days 10 and 24, the microbiomes of both CONV and RWA chickens were dominated by members of the phylum Firmicutes. On day 35, while Firmicutes remained dominant in the RWA chickens, the microbiome of CONV chickens exhibited am abundance of Bacteroidetes. The cecal microbiome of CONV chickens was enriched with the genus Faecalibacterium, Pseudoflavonifractor, unclassified Clostridium_IV, Bacteroides, Alistipes, and Butyricimonas, whereas the cecal microbiome of RWA chickens was enriched with genus Anaerofilum, Butyricicoccu, Clostridium_XlVb and unclassified Lachnospiraceae. Overall, the cecal microbiome richness, diversity, and composition were greatly influenced by the management program applied in these farms. These findings provide a foundation for further research on tailoring feed formulation or developing a consortium to modify the gut microbiome composition of RWA chickens.
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Affiliation(s)
- Seyed Hossien Kairmi
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Khaled Abdelaziz
- Department of Animal and Veterinary Sciences, Clemson University, Clemson, SC, United States of America
- Clemson University School of Health Research (CUSHR), Clemson, South Carolina, United States of America
| | - Heidi Spahany
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Jake Astill
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - David Trott
- Wallenstein Feed & Supply Ltd, Wallenstein, Ontario, Canada
| | - Blake Wang
- Wallenstein Feed & Supply Ltd, Wallenstein, Ontario, Canada
| | - Alice Wang
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - John Parkinson
- Program in Molecular Medicine, Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Biochemistry & Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Shayan Sharif
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
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4
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Fruci M, Kithama M, Kiarie EG, Shao S, Liu H, Topp E, Diarra MS. Effects of partial or complete replacement of soybean meal with commercial black soldier fly larvae (Hermetia illucens) meal on growth performance, cecal short chain fatty acids, and excreta metabolome of broiler chickens. Poult Sci 2023; 102:102463. [PMID: 36758368 PMCID: PMC9941379 DOI: 10.1016/j.psj.2022.102463] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/16/2022] [Accepted: 12/25/2022] [Indexed: 01/08/2023] Open
Abstract
Black soldier fly larvae meal (BSFLM) is receiving great attention as a rich source of protein and antimicrobials for poultry. Therefore, we evaluated the effects of partially or completely replacing soybean meal (SBM) with commercial BSFLM on growth performance, tibia traits, cecal short chain fatty acid (SCFA) concentrations, and excreta metabolomes in broiler chickens (Gallus gallus domesticus). A total of 480 day-old male Ross × Ross 708 chicks were assigned to 6 diets (8 replicates/diet): a basal corn-SBM diet with in-feed bacitracin methylene disalicylate (BMD), a corn-SBM diet without BMD (0% BSFLM), and four diets in which the SBM was substituted with 12.5, 25, 50, and 100% BSFLM. Body weight (BW), feed intake (FI) and cumulative feed conversion ratio (cFCR) were monitored on days 14, 28, and 35. Cecal SCFA levels were determined on days 14, 28, and 35. Tibia traits and excreta metabolomes were determined on day (d) 35. On d14, birds fed 12.5 and 25% BSFLM had a similar BW, FI, and cFCR as birds fed BMD (P > 0.05). On d 35, birds fed 12.5% BSFLM had a similar BW, FI and cFCR as birds fed BMD or 0% BSFLM (P > 0.05). For each phase, birds fed 100% BSFLM had a lower BW, FI and higher cFCR than birds fed BMD or 0% BSFLM (P < 0.05). On d 35, BW decreased linearly, quadratically, and cubically with increasing levels of BSFLM (P < 0.01). Overall (d 0-35), BSFLM linearly, quadratically, and cubically decreased FI and quadratically and cubically increased cFCR (P < 0.01). Quadratic responses were observed for tibia fresh weight (P = 0.049) and ash content (P = 0.022). BSFLM did not impact cecal SCFAs levels. The excreta metabolome of birds fed 100% BSFLM clustered independently from all other groups and exhibited greater levels of putatively identified methionine, lysine, valine, glutamine, histidine and lower levels of arginine as compared to all diets. Taken together, substitution of SBM with ≤25% of BSFLM in the starter phase may be used as an alternative to BMD.
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Affiliation(s)
- Michael Fruci
- London Research and Development Centre, Agriculture and Agri-Food Canada, Department of Microbiology and Immunology, University of Western Ontario, London, Ontario, Canada.
| | - Munene Kithama
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, Ontario, Canada; Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada
| | - Elijah G Kiarie
- Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada
| | - Suqin Shao
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, Ontario, Canada
| | - Huaizhi Liu
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, Ontario, Canada
| | - Edward Topp
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada; Department of Biology, University of Western Ontario, London, Ontario, Canada
| | - Moussa S Diarra
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, Ontario, Canada
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Effect of Raw Chickpea in the Broiler Chicken Diet on Intestinal Histomorphology and Intestinal Microbial Populations. Animals (Basel) 2022; 12:ani12141767. [PMID: 35883313 PMCID: PMC9311778 DOI: 10.3390/ani12141767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/08/2022] [Accepted: 07/08/2022] [Indexed: 11/17/2022] Open
Abstract
The aim of the study was to determine the effect of partial replacement of SBM protein with CPR-derived protein in the broiler rearing period from 22 to 42 days of age on the intestinal histomorphology and the composition of the intestinal microbial population. Male broiler chicks aged 1 day were assigned to two groups with different nutrition schemes (n = 100 in each, 5 cages of 20 chicks in each). The chickens were reared for 42 days. All birds were fed isonitrogenous and isoenergetic diets: starter (1 to 21 d), grower (22 to 35 d), and finisher (36 to 42 d). From rearing day 22, different diets were provided to the birds: the SBM group received feed with 100% soybean meal protein, and the diet of the CPR group the protein originated from soybean meal was replaced by 50% chickpea protein. The study results indicated a significant impact of the inclusion of CPR in the diet on the basic intestinal structures (thickness of myenteron: submucosa, jejunum and duodenum mucosa, and jejunum transversal lamina). The addition of CPR led to shortening of intestinal villi, an increase in villus thickness, and reduced intestine absorptive surface in the duodenum and jejunum. The CPR group exhibited a significantly lower villus length-to-crypt depth ratio in the jejunum (p < 0.001). The inclusion of chickpeas in the diet increased the total count of mesophilic bacteria and coliforms in the intestinal contents (p < 0.05). In summary, it has been demonstrated that the inclusion of CPR in the diet induced considerable disturbances in metabolism and intestinal structure. Although CPR is a cheap protein source, its use in poultry diet does not ensure development of the intestinal structure comparable to that in the case of an SBM-only diet.
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Kairmi SH, Taha-Abdelaziz K, Yitbarek A, Sargolzaei M, Spahany H, Astill J, Shojadoost B, Alizadeh M, Kulkarni RR, Parkinson J, Sharif S. Effects of therapeutic levels of dietary antibiotics on the cecal microbiome composition of broiler chickens. Poult Sci 2022; 101:101864. [PMID: 35477134 PMCID: PMC9061639 DOI: 10.1016/j.psj.2022.101864] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 02/23/2022] [Accepted: 02/25/2022] [Indexed: 12/11/2022] Open
Abstract
Dietary antibiotics, including antibiotic growth promoters (AGPs), have been commonly used to improve health and growth of poultry. The present study investigated the effects of therapeutic doses of dietary antibiotics, including bacitracin methylene disalicylate (BMD), penicillin G potassium (PP) and an ionophore (salinomycin, SA), on the cecal microbiome of chickens. BMD and SA treatments were given as dietary supplements from d 1 to 35 of age. The SAPP (salinomycin+ penicillin G potassium) group was given SA as a dietary supplement from d 1 to 35 of age and PP was added to drinking water from d 19 to 24 of age to simulate common practices for control of necrotic enteritis in broilers. The cecal contents were collected from all treatment groups on d 10, 24, and 35 of age and DNA was extracted for metagenomic analysis of the cecal microbiome. The results revealed that dietary or water supplementation of therapeutic levels of antibiotics and ionophores to chickens significantly altered the cecal microbial homeostasis during different stages of the chicken life. The alpha diversity analysis showed that BMD, SA, and SAPP treatments decreased diversity and evenness of the cecal microbiome of treated chickens on d 10 of age. Species richness was also reduced on d 35 following treatment with BMD. Beta diversity analyses revealed that SAPP and BMD induced significant changes in the relative abundance of Gram-positive and -negative bacteria on d 10, while no significant differences were observed on d 24. On d 35, the non-treated control group had higher relative abundance of unclassified Gram-positive and -negative bacteria compared to SA, SAPP, and BMD treatment groups. Overall, despite their beneficial role in controlling necrotic enteritis outbreaks, the findings of this study highlight the potential negative effects of dietary supplementation of therapeutic levels of antibiotics on the gut microbiome and suggest that adjusting gut bacteria may be required to restore microbial richness and diversity of the gut microbiome following treatment with these antibiotics.
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Mohsin Bukhari S, Ahmed Alghamdi H, Ur Rehman K, Andleeb S, Ahmad S, Khalid N. Metagenomics analysis of the fecal microbiota in Ring-necked pheasants ( Phasianus colchicus) and Green pheasants ( Phasianus versicolor) using next generation sequencing. Saudi J Biol Sci 2022; 29:1781-1788. [PMID: 35280539 PMCID: PMC8913415 DOI: 10.1016/j.sjbs.2021.10.050] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/06/2021] [Accepted: 10/18/2021] [Indexed: 11/26/2022] Open
Abstract
Pheasant reintroduction and conservation efforts have been in place in Pakistan since the 1980 s, yet there is still a scarcity of data on pheasant microbiome and zoonosis. Instead of growing vast numbers of bacteria in the laboratory, to investigate the fecal microbiome, pheasants (green and ring neck pheasant) were analyzed using 16S rRNA metagenomics and using IonS5TMXL sequencing from two flocks more than 10 birds. Operational taxonomic unit (OTU) cluster analysis and phylogenetic tree analysis was performed using Mothur software against the SSUrRNA database of SILVA and the MUSCLE (Version 3.8.31) software. Results of the analysis showed that firmicutes were the most abundant phylum among the top ten phyla, in both pheasant species, followed by other phyla such as actinobacteria and proteobacteria in ring necked pheasant and bacteroidetes in green necked pheasant. Bacillus was the most relatively abundant genus in both pheasants followed by Oceanobacillus and Teribacillus for ring necked pheasant and Lactobacillus for green necked pheasant. Because of their well-known beneficial characteristics, these genus warrants special attention. Bird droppings comprise germs from the urinary system, gut, and reproductive sites, making it difficult to research each anatomical site at the same time. We conclude that metagenomic analysis and classification provides baseline information of the pheasant fecal microbiome that plays a role in disease and health.
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Affiliation(s)
- Syed Mohsin Bukhari
- Department of Wildlife and Ecology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Huda Ahmed Alghamdi
- Department of Biology, College of Sciences, King Khalid University, Abha, Saudi Arabia
| | - Khalil Ur Rehman
- Department of Environmental Sciences, GCW University, Sailkot 51310, Pakistan
| | - Shahla Andleeb
- Department of Environmental Sciences, GCW University, Sailkot 51310, Pakistan
| | - Shahbaz Ahmad
- Department of Entomology, University of the Punjab, 54590 Lahore, Pakistan
| | - Nimra Khalid
- Department of Wildlife and Ecology, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
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Bioactive Peptides from Sesame Meal for Broiler Chickens: Its Influence on the Serum Biochemical Metabolites, Immunity Responses and Nutrient Digestibility. Int J Pept Res Ther 2021. [DOI: 10.1007/s10989-021-10168-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Adeyemi K, Sola-Ojo F, Ishola J, Ahmed M, Lawal M. Influence of Anacardium occidentale leaf supplementation in broiler chicken diet on performance, caecal microbiota, blood chemistry, immune status, carcass, and meat quality. Br Poult Sci 2021; 62:552-561. [PMID: 33635179 DOI: 10.1080/00071668.2021.1894321] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
1. This study investigated the growth performance, caecal microbiota, blood chemistry, splenic cytokines, serum immunoglobulins, carcase, meat quality and oxidative status of broiler chickens fed diets supplemented with Anacardium occidentale leaf powder (AOLP) in comparison with antibiotic and synthetic antioxidant.2. Three hundred and twenty, one-day old Arbor Acre broiler chicks were randomly allotted into four treatment groups consisting of eight pen replicates with 10 birds per pen. The treatment groups were T0, basal diet only; T1, basal diet + 0.4 g/kg oxytetracycline + 0.12 g/kg butylated hydroxyanisole (BHA); T2, basal diet + 2 g/kg AOLP and T3, basal diet + 4 g/kg AOLP. The birds were fed for 42 d when performance was assessed, and then euthanised.3. During 0-42 d, feed conversion ratio was higher (P = 0.033) in T0 birds compared with birds fed other diets. Diet did not affect carcase traits, organ weights, serum biochemical indices, and meat composition, pH, cook loss or meat colour. Supplemented birds had higher erythrocyte (P = 0.042) and haemoglobin (P = 0.025), and lower leukocytes (P = 0.012) compared with the T0 birds.4. Diet T3 upregulated (P = 0.020) splenic interleukin-10 compared with other diets. The T0 birds had higher (P < 0.05) interleukin-6 and serum IgG and IgM compared with the supplemented birds. Caecal E. coli and Salmonella spp. counts were higher (P < 0.05) in T0 birds than in the supplemented groups. Lactobacillus spp. counts were higher (P = 0.001) in T3 birds than in those fed other diets. Breast and thigh meat from the T0 birds had higher (P < 0.05) TBARS value, and carbonyl content compared to the supplemented birds. The T0 breast meat had higher drip loss (P = 0.001) than meat from the supplemented birds.5. The results suggested that AOLP exhibited antimicrobial and antioxidant properties that were comparable to the responses to oxytetracycline and BHA (T1) in broiler diets. Nonetheless, the efficacy of AOLP needs to be verified under disease challenge or compromised health condition.
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Affiliation(s)
- K Adeyemi
- Animal Production, University of Ilorin, Ilorin, Nigeria
| | - F Sola-Ojo
- Animal Production, University of Ilorin, Ilorin, Nigeria
| | - J Ishola
- Animal Production, University of Ilorin, Ilorin, Nigeria
| | - M Ahmed
- Animal Production, University of Ilorin, Ilorin, Nigeria
| | - M Lawal
- Animal Production, University of Ilorin, Ilorin, Nigeria
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Sanchez HM, Whitener VA, Thulsiraj V, Amundson A, Collins C, Duran-Gonzalez M, Giragossian E, Hornstra A, Kamel S, Maben A, Reynolds A, Roswell E, Schmidt B, Sevigny L, Xiong C, Jay JA. Antibiotic Resistance of Escherichia coli Isolated from Conventional, No Antibiotics, and Humane Family Owned Retail Broiler Chicken Meat. Animals (Basel) 2020; 10:ani10122217. [PMID: 33256102 PMCID: PMC7760345 DOI: 10.3390/ani10122217] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 12/15/2022] Open
Abstract
Simple Summary While it is well known that antibiotics administered for either therapeutic or non-therapeutic purposes in livestock farms promote the development of antibiotic resistance in bacteria through selective pressure, there are conflicting findings in the literature with regard to the influence of production strategies on antibiotic resistance in bacteria isolated from commercially-available chicken. In this work, we tested the hypothesis that there would be differences in antibiotic resistance in E. coli isolated from three categories of production methods: Conventional, No Antibiotics, and Humane Family Owned. In this work, it was found that for both ampicillin and erythromycin, there was no significant difference (p > 0.05) between Conventional and USDA-certified No Antibiotics chicken, which is in line with some previous work. The novel finding in this work is that we observed a statistically significant difference between both of the previously mentioned groups and chicken from Humane Family Owned production schemes. To our knowledge, this is the first time E. coli from Humane Family Owned chicken has been studied for antibiotic resistance. This work contributes to a better understanding of a potential strategy of chicken production for the overall benefit of human health, in line with the One Health approach implemented by the World Health Organization. Abstract The use of antibiotics for therapeutic and especially non-therapeutic purposes in livestock farms promotes the development of antibiotic resistance in previously susceptible bacteria through selective pressure. In this work, we examined E. coli isolates using the standard Kirby-Bauer disk diffusion susceptibility protocol and the CLSI standards. Companies selling retail chicken products in Los Angeles, California were grouped into three production groupings—Conventional, No Antibiotics, and Humane Family Owned. Humane Family Owned is not a federally regulated category in the United States, but shows the reader that the chicken is incubated, hatched, raised, slaughtered, and packaged by one party, ensuring that the use of antibiotics in the entire production of the chicken is known and understood. We then examined the antibiotic resistance of the E. coli isolates (n = 325) by exposing them to seven common antibiotics, and resistance was seen to two of the antibiotics, ampicillin and erythromycin. As has been shown previously, it was found that for both ampicillin and erythromycin, there was no significant difference (p > 0.05) between Conventional and USDA (United States Department of Agriculture)-certified No Antibiotics chicken. Unique to this work, we additionally found that Humane Family Owned chicken had fewer (p ≤ 0.05) antibiotic-resistant E. coli isolates than both of the previous. Although not considered directly clinically relevant, we chose to test erythromycin because of its ecological significance to the environmental antibiotic resistome, which is not generally done. To our knowledge, Humane Family Owned consumer chicken has not previously been studied for its antibiotic resistance. This work contributes to a better understanding of a potential strategy of chicken production for the overall benefit of human health, giving evidentiary support to the One Health approach implemented by the World Health Organization.
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Affiliation(s)
- Helen M. Sanchez
- Department of Civil and Environmental Engineering, University of California at Los Angeles, Los Angeles, CA 90095, USA; (H.M.S.); (V.A.W.); (V.T.); (A.A.); (M.D.-G.); (A.R.)
| | - Victoria A. Whitener
- Department of Civil and Environmental Engineering, University of California at Los Angeles, Los Angeles, CA 90095, USA; (H.M.S.); (V.A.W.); (V.T.); (A.A.); (M.D.-G.); (A.R.)
| | - Vanessa Thulsiraj
- Department of Civil and Environmental Engineering, University of California at Los Angeles, Los Angeles, CA 90095, USA; (H.M.S.); (V.A.W.); (V.T.); (A.A.); (M.D.-G.); (A.R.)
| | - Alicia Amundson
- Department of Civil and Environmental Engineering, University of California at Los Angeles, Los Angeles, CA 90095, USA; (H.M.S.); (V.A.W.); (V.T.); (A.A.); (M.D.-G.); (A.R.)
| | - Carolyn Collins
- Institute of the Environment and Sustainability, University of California at Los Angeles, Los Angeles, CA 90095, USA; (C.C.); (E.G.); (A.H.); (S.K.); (A.M.); (E.R.); (B.S.); (L.S.); (C.X.)
| | - Mckenzie Duran-Gonzalez
- Department of Civil and Environmental Engineering, University of California at Los Angeles, Los Angeles, CA 90095, USA; (H.M.S.); (V.A.W.); (V.T.); (A.A.); (M.D.-G.); (A.R.)
| | - Edwin Giragossian
- Institute of the Environment and Sustainability, University of California at Los Angeles, Los Angeles, CA 90095, USA; (C.C.); (E.G.); (A.H.); (S.K.); (A.M.); (E.R.); (B.S.); (L.S.); (C.X.)
| | - Allison Hornstra
- Institute of the Environment and Sustainability, University of California at Los Angeles, Los Angeles, CA 90095, USA; (C.C.); (E.G.); (A.H.); (S.K.); (A.M.); (E.R.); (B.S.); (L.S.); (C.X.)
| | - Sarah Kamel
- Institute of the Environment and Sustainability, University of California at Los Angeles, Los Angeles, CA 90095, USA; (C.C.); (E.G.); (A.H.); (S.K.); (A.M.); (E.R.); (B.S.); (L.S.); (C.X.)
| | - Andrea Maben
- Institute of the Environment and Sustainability, University of California at Los Angeles, Los Angeles, CA 90095, USA; (C.C.); (E.G.); (A.H.); (S.K.); (A.M.); (E.R.); (B.S.); (L.S.); (C.X.)
| | - Amelia Reynolds
- Department of Civil and Environmental Engineering, University of California at Los Angeles, Los Angeles, CA 90095, USA; (H.M.S.); (V.A.W.); (V.T.); (A.A.); (M.D.-G.); (A.R.)
| | - Elizabeth Roswell
- Institute of the Environment and Sustainability, University of California at Los Angeles, Los Angeles, CA 90095, USA; (C.C.); (E.G.); (A.H.); (S.K.); (A.M.); (E.R.); (B.S.); (L.S.); (C.X.)
| | - Benjamin Schmidt
- Institute of the Environment and Sustainability, University of California at Los Angeles, Los Angeles, CA 90095, USA; (C.C.); (E.G.); (A.H.); (S.K.); (A.M.); (E.R.); (B.S.); (L.S.); (C.X.)
| | - Lauren Sevigny
- Institute of the Environment and Sustainability, University of California at Los Angeles, Los Angeles, CA 90095, USA; (C.C.); (E.G.); (A.H.); (S.K.); (A.M.); (E.R.); (B.S.); (L.S.); (C.X.)
| | - Cindy Xiong
- Institute of the Environment and Sustainability, University of California at Los Angeles, Los Angeles, CA 90095, USA; (C.C.); (E.G.); (A.H.); (S.K.); (A.M.); (E.R.); (B.S.); (L.S.); (C.X.)
| | - Jennifer A. Jay
- Department of Civil and Environmental Engineering, University of California at Los Angeles, Los Angeles, CA 90095, USA; (H.M.S.); (V.A.W.); (V.T.); (A.A.); (M.D.-G.); (A.R.)
- Institute of the Environment and Sustainability, University of California at Los Angeles, Los Angeles, CA 90095, USA; (C.C.); (E.G.); (A.H.); (S.K.); (A.M.); (E.R.); (B.S.); (L.S.); (C.X.)
- Correspondence: ; Tel.: +1-310-267-5365
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11
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Zheng M, Mao P, Tian X, Meng L. Effects of grazing mixed-grass pastures on growth performance, immune responses, and intestinal microbiota in free-range Beijing-you chickens. Poult Sci 2020; 100:1049-1058. [PMID: 33518063 PMCID: PMC7858154 DOI: 10.1016/j.psj.2020.11.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/05/2020] [Accepted: 11/09/2020] [Indexed: 11/28/2022] Open
Abstract
There is an increasing interest in free-range poultry with the increasing focus on food safety and animal welfare. This study was conducted to evaluate the effects of grazing mixed-grass pastures on growth performance, immune responses, and intestinal microbiota in free-range laying chickens. Ten-week-old female Beijing-you chickens were blocked by the BW and randomly assigned to 3 free-range systems in poplar plantations for 120 d: forage-removed paddocks with a high stocking density of 5 m2/hen (control [CK]); mixed-grass pastures with a low stocking density of 6 m2/hen ;or mixed-grass pastures with a high stocking density of 5 m2/hen. Intestinal microbial community analysis was performed by 16S rRNA gene sequencing using Illumina MiSeq. The results revealed that no differences (P > 0.05) were found between the 3 raising systems for the BW and ADG. Chickens grazing mixed-grass pastures exhibited decreased (P > 0.05) mortality and improved immune responses as evidenced by increased T-lymphocyte proliferation (P > 0.05) and immunoglobulin A (P > 0.05) and immunoglobulin M concentrations (P < 0.05) compared with those raised in forage-removed paddocks. Metagenomic analysis indicated that grazing mixed-grass pastures regulated the intestinal microbiota by increasing the prevalence of beneficial bacteria, such as Lactobacillus, Bacteroides, and Faecalibacterium, and reducing potentially pathogenic bacteria population, such as the Rikenellaceae_RC9_gut_group compared with the CK. Therefore, this study indicated that grazing mixed-grass pastures could positively influence intestinal microbiota that may contribute to the overall growth and immunity of free-range chickens and that a low stocking density of 6 m2/hen was optimal to Beijing-you chickens grazing mixed-grass pastures.
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Affiliation(s)
- Mingli Zheng
- Beijing Research and Development Center for Grass and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Peichun Mao
- Beijing Research and Development Center for Grass and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Xiaoxia Tian
- Beijing Research and Development Center for Grass and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Lin Meng
- Beijing Research and Development Center for Grass and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
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12
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Adewole D. Effect of Dietary Supplementation with Coarse or Extruded Oat Hulls on Growth Performance, Blood Biochemical Parameters, Ceca Microbiota and Short Chain Fatty Acids in Broiler Chickens. Animals (Basel) 2020; 10:E1429. [PMID: 32824171 PMCID: PMC7459877 DOI: 10.3390/ani10081429] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/13/2020] [Accepted: 08/13/2020] [Indexed: 01/22/2023] Open
Abstract
The purpose of this study was to determine the effect of dietary supplementation with coarse or extruded oat hulls on growth performance, blood biochemistry, cecal microbiota, and short chain fatty acids (SCFA) in broiler chickens. Chickens were randomly allotted to four dietary treatments consisting of a corn-wheat-soybean meal-based diet (Basal), Basal + Bacitracin methylenedisalicylate (BMD), Basal +3% coarse OH (COH), and basal +3% extruded OH (EOH). Feed intake (FI), body weight gain (BWG), and feed conversion ratio (FCR) were recorded weekly. On day 36, eight chickens/treatment were euthanized, blood samples were collected, and organ weights were determined. Cecal digesta samples were collected for the determination of SCFA concentration and microbial DNA sequence. Data were subjected to ANOVA using the mixed procedure of SAS. Alpha diversity was estimated with the Shannon index, and the significance of diversity differences was tested with ANOVA. Birds fed COH and EOH had reduced (p < 0.05) BWG, but there was no effect of treatment on FCR. There was a significant increase (p = 0.0050) in relative gizzard empty weight among birds that were fed COH, compared to the other treatments. Dietary treatments had no effect on blood biochemical parameters and SCFA concentration. Cecal microbial composition of chickens was mostly comprised of Firmicutes and Tenericutes. Seven OTUs that were differentially abundant among treatments were identified. In conclusion, supplementation of broiler chickens' diets with 3% COH or EOH did not affect the FCR, blood biochemical parameters and SCFA concentration, but modified few cecal microbiota at the species level. Dietary supplementation with COH but not EOH significantly increased the relative gizzard weight.
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Affiliation(s)
- Deborah Adewole
- Department of Animal Science and Aquaculture, Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada
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13
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Lee SJ, Cho S, La TM, Lee HJ, Lee JB, Park SY, Song CS, Choi IS, Lee SW. Comparison of microbiota in the cloaca, colon, and magnum of layer chicken. PLoS One 2020; 15:e0237108. [PMID: 32750076 PMCID: PMC7402502 DOI: 10.1371/journal.pone.0237108] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 07/20/2020] [Indexed: 12/20/2022] Open
Abstract
Anatomically terminal parts of the urinary, reproductive, and digestive systems of birds all connect to the cloaca. As the feces drain through the cloaca in chickens, the cloacal bacteria were previously believed to represent those of the digestive system. To investigate similarities between the cloacal microbiota and the microbiota of the digestive and reproductive systems, microbiota inhabiting the colon, cloaca, and magnum, which is a portion of the chicken oviduct of 34-week-old, specific-pathogen-free hens were analyzed using a 16S rRNA metagenomic approach using the Ion torrent sequencer and the Qiime2 bioinformatics platform. Beta diversity via unweighted and weighted unifrac analyses revealed that the cloacal microbiota was significantly different from those in the colon and the magnum. Unweighted unifrac revealed that the cloacal microbiota was distal from the microbiota in the colon than from the microbiota in the magnum, whereas weighted unifrac revealed that the cloacal microbiota was located further away from the microbiota in the magnum than from the microbiota inhabiting the colon. Pseudomonas spp. were the most abundant in the cloaca, whereas Lactobacillus spp. and Flavobacterium spp. were the most abundant species in the colon and the magnum. The present results indicate that the cloaca contains a mixed population of bacteria, derived from the reproductive, urinary, and digestive systems, particularly in egg-laying hens. Therefore, sampling cloaca to study bacterial populations that inhabit the digestive system of chickens requires caution especially when applied to egg-laying hens. To further understand the physiological role of the microbiota in chicken cloaca, exploratory studies of the chicken’s cloacal microbiota should be performed using chickens of different ages and types.
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Affiliation(s)
- Seo-Jin Lee
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Seongwoo Cho
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Tae-Min La
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Hong-Jae Lee
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Joong-Bok Lee
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Seung-Yong Park
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Chang-Seon Song
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - In-Soo Choi
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | - Sang-Won Lee
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
- * E-mail:
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14
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Betancourt L, Hume M, Rodríguez F, Nisbet D, Sohail MU, Afanador-Tellez G. Effects of Colombian oregano essential oil (Lippia origanoides Kunth) and Eimeria species on broiler production and cecal microbiota. Poult Sci 2019; 98:4777-4786. [PMID: 30995320 DOI: 10.3382/ps/pez193] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 03/21/2019] [Indexed: 12/16/2022] Open
Abstract
The gut microbiota has an important effect on poultry health and production. The aim of this study was to evaluate the effect of Colombian oregano (COO), Lippia origanoides Kunth, essential oil supplementation on broiler chicken performance and their cecal bacterial microbiome by 16S-based sequencing. Essential oil was extracted by steam distillation and analyzed by Gas chromatography/mass spectrometry. Two COO levels in feed, 0 ppm control (C) and 100 ppm (O), were evaluated in 2 groups of broilers either unchallenged (U) or challenged (E) with a viable attenuated Eimeria (coccidia) oocyte vaccine. Four treatments, UC, UO, EC, and EO, were distributed among 720 one-day-old male Ross broilers randomly placed in 24 pens. Cecal contents DNA was extracted and pyrosequencing was performed following a standard procedure. Pyrosequencing data were processed, and sequence reads were phylogenetically classified. Similarity of membership and structure in the communities were calculated. At the end of the study, the greatest COO effect was found in coccidia-challenged broilers, with an OE body weight of 1,889 ± 52.4 g with respect to 1,799 ± 36.2 g for CE (P < 0.01). Broiler cecal samples were consistent in that phylum Firmicutes and class Clostridia were highly prevalent; COO had no effect on these taxa levels between the 4 treatments (P > 0.05). A positive correlation (P < 0.01) was observed between the Firmicutes:Bacteriodetes phyla ratio against body weight at 35 D of age. This study provided both positive and negative correlations between broiler body weight against some bacterial groups identified, offering perspectives regarding bacterial groups and their impact on host health and metabolism. Lippia origanoides Kunth high thymol content showed a beneficial effect on body weight and the feed conversion ratio in broilers under coccidia challenge.
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Affiliation(s)
- Liliana Betancourt
- Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia, Bogotá 11001, Colombia
| | - Michael Hume
- United States Department of Agriculture, ARS, FFSRU, College Station, TX 250047, USA
| | | | - David Nisbet
- United States Department of Agriculture, ARS, FFSRU, College Station, TX 250047, USA
| | - Muhammad Umar Sohail
- Government College University, Faisalabad, Pakistan to Qatar University Biomedical Research Center, Doha 2713, Qatar
| | - Germán Afanador-Tellez
- Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia, Bogotá 11001, Colombia
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15
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Diaz Carrasco JM, Casanova NA, Fernández Miyakawa ME. Microbiota, Gut Health and Chicken Productivity: What Is the Connection? Microorganisms 2019; 7:microorganisms7100374. [PMID: 31547108 PMCID: PMC6843312 DOI: 10.3390/microorganisms7100374] [Citation(s) in RCA: 176] [Impact Index Per Article: 35.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/31/2019] [Accepted: 09/06/2019] [Indexed: 01/13/2023] Open
Abstract
Gut microbiota and its relationship to animal health and productivity in commercial broiler chickens has been difficult to establish due to high variability between flocks, which derives from plenty of environmental, nutritional, and host factors that influence the load of commensal and pathogenic microbes surrounding birds during their growth cycle in the farms. Chicken gut microbiota plays a key role in the maintenance of intestinal health through its ability to modulate host physiological functions required to maintain intestinal homeostasis, mainly through competitive exclusion of detrimental microorganisms and pathogens, preventing colonization and therefore decreasing the expense of energy that birds normally invest in keeping the immune system active against these pathogens. Therefore, a “healthy” intestinal microbiota implies energy saving for the host which translates into an improvement in productive performance of the birds. This review compiles information about the main factors that shape the process of gut microbiota acquisition and maturation, their interactions with chicken immune homeostasis, and the outcome of these interactions on intestinal health and productivity.
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Affiliation(s)
- Juan M Diaz Carrasco
- Instituto de Patobiología Veterinaria, Centro Nacional de Investigaciones Agropecuarias, Instituto Nacional de Tecnología Agropecuaria, Calle Las Cabañas y Los Reseros s/n, Casilla de Correo 25, 1712 Castelar, Buenos Aires, Argentina.
- Consejo Nacional de Investigaciones Científicas y Técnicas, Godoy Cruz 2290, 1425 Ciudad Autónoma de Buenos Aires, Argentina.
| | - Natalia A Casanova
- Instituto de Patobiología Veterinaria, Centro Nacional de Investigaciones Agropecuarias, Instituto Nacional de Tecnología Agropecuaria, Calle Las Cabañas y Los Reseros s/n, Casilla de Correo 25, 1712 Castelar, Buenos Aires, Argentina.
| | - Mariano E Fernández Miyakawa
- Instituto de Patobiología Veterinaria, Centro Nacional de Investigaciones Agropecuarias, Instituto Nacional de Tecnología Agropecuaria, Calle Las Cabañas y Los Reseros s/n, Casilla de Correo 25, 1712 Castelar, Buenos Aires, Argentina.
- Consejo Nacional de Investigaciones Científicas y Técnicas, Godoy Cruz 2290, 1425 Ciudad Autónoma de Buenos Aires, Argentina.
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16
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Robinson K, Becker S, Xiao Y, Lyu W, Yang Q, Zhu H, Yang H, Zhao J, Zhang G. Differential Impact of Subtherapeutic Antibiotics and Ionophores on Intestinal Microbiota of Broilers. Microorganisms 2019; 7:microorganisms7090282. [PMID: 31443457 PMCID: PMC6780560 DOI: 10.3390/microorganisms7090282] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 08/15/2019] [Accepted: 08/20/2019] [Indexed: 01/05/2023] Open
Abstract
Antimicrobial growth promoters (AGPs) are commonly used in the livestock industry at subtherapeutic levels to improve production efficiency, which is achieved mainly through modulation of the intestinal microbiota. However, how different classes of AGPs, particularly ionophores, regulate the gut microbiota remains unclear. In this study, male Cobb broiler chickens were supplemented for 14 days with or without one of five commonly used AGPs including three classical antibiotics (bacitracin methylene disalicylate, tylosin, and virginiamycin) and two ionophores (monensin and salinomycin) that differ in antimicrobial spectrum and mechanisms. Deep sequencing of the V3-V4 region of the bacterial 16S rRNA gene revealed that two ionophores drastically reduced a number of rare bacteria resulting in a significant decrease in richness and a concomitant increase in evenness of the cecal microbiota, whereas three antibiotics had no obvious impact. Although each AGP modulated the gut microbiota differently, the closer the antibacterial spectrum of AGPs, the more similarly the microbiota was regulated. Importantly, all AGPs had a strong tendency to enrich butyrate- and lactic acid-producing bacteria, while reducing bile salt hydrolase-producing bacteria, suggestive of enhanced metabolism and utilization of dietary carbohydrates and lipids and improved energy harvest, which may collectively be responsible for the growth-promoting effect of AGPs.
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Affiliation(s)
- Kelsy Robinson
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| | - Sage Becker
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| | - Yingping Xiao
- Institute of Quality and Standards for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Wentao Lyu
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA
- Institute of Quality and Standards for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Qing Yang
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| | - Huiling Zhu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan 430000, China
| | - Hua Yang
- Institute of Quality and Standards for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Jiangchao Zhao
- Department of Animal Science, Division of Agriculture, University of Arkansas, Fayetteville, AR 72701, USA
| | - Guolong Zhang
- Department of Animal and Food Sciences, Oklahoma State University, Stillwater, OK 74078, USA.
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17
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Lunedo R, Furlan LR, Fernandez-Alarcon MF, Squassoni GH, Campos DMB, Perondi D, Macari M. Intestinal microbiota of broilers submitted to feeding restriction and its relationship to hepatic metabolism and fat mass: Fast-growing strain. J Anim Physiol Anim Nutr (Berl) 2019; 103:1070-1080. [PMID: 30934145 DOI: 10.1111/jpn.13093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 02/27/2019] [Accepted: 02/28/2019] [Indexed: 12/16/2022]
Abstract
The present study was conducted to verify how feed restriction affects gut microbiota and gene hepatic expression in broiler chickens and how these variables are related to body weight gain. For the experiment, 21-d-old Cobb500TM birds were distributed in a completely randomized experimental design with three treatments: T1. Control (ad libitum-3.176 Mcal/kg ME-metabolizable energy-and 19% CP-crude protein); T2. Energetic restriction (2.224 Mcal/kg ME and 19% CP) from 22 to 42 days with consumption equivalent to control; T3. Quantitative restriction (70% restriction, i.e., restricted broilers ingested only 30% of the quantity consumed by the control group-3.176 Mcal/kg ME and 19% CP) for 7 days, followed by refeeding ad libitum from 28 to 42 days. Ileum and caecum microbiota collections were made at 21, 28 and 42 days of age. Hepatic tissue was collected at 28 and 42 days old for relative gene expression analyses. At 43-d-old, body composition was quantified by DXA (Dual-energy X-ray Absorptiometry). Both feed restriction programmes decreased Lactobacillus and increased Enterococcus and Enterobacteriaceae counts. No differences were found in the refeeding period. Energetic restriction induced the expression of CPT1-A (Carnitine palmitoyltransferase 1A) gene, and decreased body fat mass. Quantitative feed restriction increased lipogenic and decreased lipolytic gene expression. In the refeeding period, CPT1-A gene expression was induced, without changing the broilers body composition. Positive associations were found between BWG (Body Weight Gain) and Lactobacillus and Clostridium cluster IV groups, and negatively associations with Enterobacteriaceae and Enterococcus bacterial groups. In conclusion, differences found in microbiota were similar between the two feed restriction programmes, however, hepatic gene expression differences were only found in quantitative restriction. Higher counts of Lactobacillus and Clostridium cluster IV groups in ileum are likely to be related to better broiler performance and low expression of lipogenic genes.
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Affiliation(s)
- Raquel Lunedo
- School of Agricultural and Veterinary Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
| | - Luiz R Furlan
- São Paulo State University (Unesp), Aquaculture Center of Unesp, Jaboticabal, São Paulo, Brazil
| | - Miguel F Fernandez-Alarcon
- School of Agricultural and Veterinary Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
| | - Gustavo H Squassoni
- São Paulo State University (Unesp), Aquaculture Center of Unesp, Jaboticabal, São Paulo, Brazil
| | - Daniel M B Campos
- Federal University of São Carlos (UFSCar), Campus Lagoa do Sino, São Paulo, Brazil
| | - Dani Perondi
- School of Agricultural and Veterinary Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
| | - Marcos Macari
- School of Agricultural and Veterinary Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
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18
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Yang G, Zhang P, Liu H, Zhu X, Dong W. Spatial variations in intestinal skatole production and microbial composition in broilers. Anim Sci J 2019; 90:412-422. [PMID: 30656801 DOI: 10.1111/asj.13164] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/17/2018] [Accepted: 11/27/2018] [Indexed: 11/28/2022]
Abstract
Spatial variations in intestinal skatole production and microbial composition in broilers were evaluated. Fifteen 42-day-old broilers were slaughtered. Samples were taken from the broilers' ileum, cecum, and rectum and analyzed for skatole levels. Denaturing gradient gel electrophoresis (DGGE) technique was used to analyze the microbial community from the intestinal digesta. The skatole levels could be arranged in decreasing order: cecum > rectum > ileum. Cecal lactate and acetate levels were higher than those of ileum and rectum (p < 0.01). Cecal microbial diversity and richness were higher than those of ileum (p < 0.05). One specific DGGE band was found in cecal sample and is closely related to Bacteroides uniformis. Cecum and rectum samples consisted of three coexistence bands, the related bacteria included Lactobacillus vaginalis and two members of Candidatus Arthromitus. The total bacterial population in cecum was higher than that in ileum and rectum (p < 0.05). Skatole levels were positively correlated with microbial Shannon-Wiener index, richness, total bacteria (p < 0.01) and Lactobacilli and Bifidobacterium (p < 0.05) populations. These results suggest that the variations in fermentation patterns are more likely to explain differences in intestinal skatole level. Bacteroides uniformis may play a role in the production of skatole.
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Affiliation(s)
- Guiqin Yang
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, P. R. China
| | - Pei Zhang
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, P. R. China
| | - Haiying Liu
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, P. R. China
| | - Xin Zhu
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, P. R. China
| | - Weiguo Dong
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, P. R. China
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19
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Effects of early feeding and dietary interventions on development of lymphoid organs and immune competence in neonatal chickens: A review. Vet Immunol Immunopathol 2018; 201:1-11. [DOI: 10.1016/j.vetimm.2018.05.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 05/04/2018] [Accepted: 05/06/2018] [Indexed: 12/14/2022]
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20
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Mehdi Y, Létourneau-Montminy MP, Gaucher ML, Chorfi Y, Suresh G, Rouissi T, Brar SK, Côté C, Ramirez AA, Godbout S. Use of antibiotics in broiler production: Global impacts and alternatives. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2018; 4:170-178. [PMID: 30140756 PMCID: PMC6103476 DOI: 10.1016/j.aninu.2018.03.002] [Citation(s) in RCA: 264] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 03/16/2018] [Accepted: 03/19/2018] [Indexed: 01/12/2023]
Abstract
Antibiotics are used to fight bacterial infections. However, a selective pressure gave rise to bacteria resistant to antibiotics. This leaves scientists worried about the danger to human and animal health. Some strategies can be borrowed to reduce the use of antibiotics in chicken farms. Much research has been carried out to look for natural agents with similar beneficial effects of growth promoters. The aim of these alternatives is to maintain a low mortality rate, a good level of animal yield while preserving environment and consumer health. Among these, the most popular are probiotics, prebiotics, enzymes, organic acids, immunostimulants, bacteriocins, bacteriophages, phytogenic feed additives, phytoncides, nanoparticles and essential oils.
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Affiliation(s)
- Youcef Mehdi
- Université Laval, Faculté des sciences de l'agriculture et de l'alimentation, 2425 rue de l'Agriculture, local 4145 (Qc), Québec G1V 0A6, Canada
- Institut de Recherche et de Développement en Agroenvironnement, 2700 rue Einstein-Québec, Québec G1P 3W8, Canada
| | - Marie-Pierre Létourneau-Montminy
- Université Laval, Faculté des sciences de l'agriculture et de l'alimentation, 2425 rue de l'Agriculture, local 4145 (Qc), Québec G1V 0A6, Canada
| | - Marie-Lou Gaucher
- Université de Montréal, Faculté de Médecine Vétérinaire, 3200 rue Sicotte, Saint-Hyacinthe, Québec J2S 2M2, Canada
| | - Younes Chorfi
- Université de Montréal, Faculté de Médecine Vétérinaire, 3200 rue Sicotte, Saint-Hyacinthe, Québec J2S 2M2, Canada
| | - Gayatri Suresh
- Institut National de Recherche Scientifique, 490 de la Couronne (Qc), Québec G1K 9A9, Canada
| | - Tarek Rouissi
- Institut National de Recherche Scientifique, 490 de la Couronne (Qc), Québec G1K 9A9, Canada
| | - Satinder Kaur Brar
- Institut National de Recherche Scientifique, 490 de la Couronne (Qc), Québec G1K 9A9, Canada
| | - Caroline Côté
- Institut de Recherche et de Développement en Agroenvironnement, 2700 rue Einstein-Québec, Québec G1P 3W8, Canada
| | - Antonio Avalos Ramirez
- Centre National en Électrochimie et en Technologies Environnementales, 2263 Avenue du Collège, Shawinigan, Québec G9N 6V8, Canada
| | - Stéphane Godbout
- Institut de Recherche et de Développement en Agroenvironnement, 2700 rue Einstein-Québec, Québec G1P 3W8, Canada
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21
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Antibiotic growth promoters virginiamycin and bacitracin methylene disalicylate alter the chicken intestinal metabolome. Sci Rep 2018; 8:3592. [PMID: 29483631 PMCID: PMC5827016 DOI: 10.1038/s41598-018-22004-6] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 02/14/2018] [Indexed: 12/31/2022] Open
Abstract
Although dietary antibiotic growth promoters have long been used to increase growth performance in commercial food animal production, the biochemical details associated with these effects remain poorly defined. A metabolomics approach was used to characterize and identify the biochemical compounds present in the intestine of broiler chickens fed a standard, unsupplemented diet or a diet supplemented with the antibiotic growth promoters, virginiamycin or bacitracin methylene disalicylate. Compared with unsupplemented controls, the levels of 218 biochemicals were altered (156 increased, 62 decreased) in chickens given the virginiamycin-supplemented diet, while 119 were altered (96 increased, 23 decreased) with the bacitracin-supplemented diet. When compared between antibiotic-supplemented groups, 79 chemicals were altered (43 increased, 36 decreased) in virginiamycin- vs. bacitracin-supplemented chickens. The changes in the levels of intestinal biochemicals provided a distinctive biochemical signature unique to each antibiotic-supplemented group. These biochemical signatures were characterized by increases in the levels of metabolites of amino acids (e.g. 5-hydroxylysine, 2-aminoadipate, 5-hydroxyindoleaceate, 7-hydroxyindole sulfate), fatty acids (e.g. oleate/vaccenate, eicosapentaenoate, 16-hydroxypalmitate, stearate), nucleosides (e.g. inosine, N6-methyladenosine), and vitamins (e.g. nicotinamide). These results provide the framework for future studies to identify natural chemical compounds to improve poultry growth performance without the use of in-feed antibiotics.
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Park S, Roto S, Pavlidis H, McIntyre D, Striplin K, Brammer L, Ricke S. Effects of feeding Original XPC™ to broilers with a live coccidiosis vaccine under industrial conditions: Part 2. Cecal microbiota analysis. Poult Sci 2017; 96:2400-2411. [DOI: 10.3382/ps/pex014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 01/04/2017] [Indexed: 12/17/2022] Open
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Understanding the mechanisms of zinc bacitracin and avilamycin on animal production: linking gut microbiota and growth performance in chickens. Appl Microbiol Biotechnol 2017; 101:4547-4559. [DOI: 10.1007/s00253-017-8193-9] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 02/05/2017] [Accepted: 02/12/2017] [Indexed: 01/02/2023]
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Blajman JE, Zbrun MV, Signorini ML, Zimmermann JA, Rossler E, Berisvil AP, Scharpen AR, Astesana DM, Soto LP, Frizzo LS. Development of cecal-predominant microbiota in broilers during a complete rearing using denaturing gradient gel electrophoresis. ANIMAL PRODUCTION SCIENCE 2017. [DOI: 10.1071/an15475] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Understanding of the intestinal microbiota is crucial to enhance intestinal health and performance parameters in animals. A more exhaustive research of the intestinal microbiota of broilers could be of interest to implement appropriate intervention measures. The aim of the present study was to investigate the development of the predominant cecal microbiota in broilers that were fed a Lactobacillus salivarius DSPV 001P strain during a complete rearing using denaturing gradient gel electrophoresis (DGGE). Bacterial DNA from cecal samples of 24 broilers at different ages were amplified by PCR and analysed by DGGE. A total of 35 DGGE products were excised and sequenced. Distinctive differences in bacterial communities were observed in the caecum as broilers age. At early stages, identified bacteria within the caecum of broilers were predominantly Clostridium-related species. Also, some sequences had the closest match to the genus Escherichia/Shigella. Furthermore, the caecum was a reservoir rich in uncultured bacteria. The major difference observed in our study was an increase of potentially beneficial Lactobacillus at Day 45. These results may be attributed to modulation of the microbiota by the probiotic supplementation. The obtained data could be relevant for future studies related to the influence of the microbiota resulting from probiotic supplementation on the performance and the immunological parameters of broilers.
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Zhou X, Jiang X, Yang C, Ma B, Lei C, Xu C, Zhang A, Yang X, Xiong Q, Zhang P, Men S, Xiang R, Wang H. Cecal microbiota of Tibetan Chickens from five geographic regions were determined by 16S rRNA sequencing. Microbiologyopen 2016; 5:753-762. [PMID: 27139888 PMCID: PMC5061713 DOI: 10.1002/mbo3.367] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 03/11/2016] [Accepted: 03/23/2016] [Indexed: 12/22/2022] Open
Abstract
Tibetan Chickens should have unique gastrointestinal microbiota because of their particular habitats. Thus, the aim of this study was to investigate the cecal microbiota of Tibetan Chickens from five typical high-altitude regions of China. Lohmann egg-laying hens (LMs) and Daheng broiler chickens (DHs) were chosen as controls. The cecal bacterial populations of Tibetan Chickens were surveyed by high-throughput sequencing (HTS) of the bacterial 16S rRNA hypervariable region V3-V4 (16S rRNAV3-V4) combined with community-fingerprinting analysis of the 16S rRNA gene based on polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). The results revealed that the majority of cecal microbiota differed between the Tibetan Chicken and LM/DH. The microbial communities in the cecum were composed of 16 phyla, 28 classes, 36 orders, 57 families, 101 genera, and 189 species. Represented phyla were Bacteroidetes (>47%), Firmicutes (>18.8%), Spirochaetae (>0.3%), and Proteobacteria (>0.4%). Bacteroides and the RC9 gut group were the two most abundant genera. There were relatively more Christensenellaceae, Subdoligranulum, Spirochaeta, and Treponema in Tibetan Chickens, whereas there were more Phascolarctobacterium, Faecalibacterium, Megamonas, and Desulfovibrio in LMs and DHs. The cecal microbiota of Tibetan Chicken have slightly diverged due to exposure to different geographic environments. Differences in the intestinal bacterial communities of Tibetan Chicken and LM/DH were noted.
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Affiliation(s)
- Xueyan Zhou
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, "985 Project" Science Innovative Platform for Resource and Environment Protection of Southwestern China, College of Life Sciences, Sichuan University, Chengdu, China
| | - Xiaosong Jiang
- Institute of Poultry Science, Academy of Sichuan Animal Husbandry Research, Chengdu, China
| | - Chaowu Yang
- Institute of Poultry Science, Academy of Sichuan Animal Husbandry Research, Chengdu, China
| | - Bingcun Ma
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, "985 Project" Science Innovative Platform for Resource and Environment Protection of Southwestern China, College of Life Sciences, Sichuan University, Chengdu, China
| | - Changwei Lei
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, "985 Project" Science Innovative Platform for Resource and Environment Protection of Southwestern China, College of Life Sciences, Sichuan University, Chengdu, China
| | - Changwen Xu
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, "985 Project" Science Innovative Platform for Resource and Environment Protection of Southwestern China, College of Life Sciences, Sichuan University, Chengdu, China
| | - Anyun Zhang
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, "985 Project" Science Innovative Platform for Resource and Environment Protection of Southwestern China, College of Life Sciences, Sichuan University, Chengdu, China
| | - Xin Yang
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, "985 Project" Science Innovative Platform for Resource and Environment Protection of Southwestern China, College of Life Sciences, Sichuan University, Chengdu, China
| | - Qi Xiong
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, "985 Project" Science Innovative Platform for Resource and Environment Protection of Southwestern China, College of Life Sciences, Sichuan University, Chengdu, China
| | - Peng Zhang
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, "985 Project" Science Innovative Platform for Resource and Environment Protection of Southwestern China, College of Life Sciences, Sichuan University, Chengdu, China
| | - Shuai Men
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, "985 Project" Science Innovative Platform for Resource and Environment Protection of Southwestern China, College of Life Sciences, Sichuan University, Chengdu, China
| | - Rong Xiang
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, "985 Project" Science Innovative Platform for Resource and Environment Protection of Southwestern China, College of Life Sciences, Sichuan University, Chengdu, China
| | - Hongning Wang
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, "985 Project" Science Innovative Platform for Resource and Environment Protection of Southwestern China, College of Life Sciences, Sichuan University, Chengdu, China.
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Choi KY, Lee TK, Sul WJ. Metagenomic Analysis of Chicken Gut Microbiota for Improving Metabolism and Health of Chickens - A Review. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2015; 28:1217-25. [PMID: 26323514 PMCID: PMC4554860 DOI: 10.5713/ajas.15.0026] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 02/23/2015] [Accepted: 03/31/2015] [Indexed: 02/01/2023]
Abstract
Chicken is a major food source for humans, hence it is important to understand the mechanisms involved in nutrient absorption in chicken. In the gastrointestinal tract (GIT), the microbiota plays a central role in enhancing nutrient absorption and strengthening the immune system, thereby affecting both growth and health of chicken. There is little information on the diversity and functions of chicken GIT microbiota, its impact on the host, and the interactions between the microbiota and host. Here, we review the recent metagenomic strategies to analyze the chicken GIT microbiota composition and its functions related to improving metabolism and health. We summarize methodology of metagenomics in order to obtain bacterial taxonomy and functional inferences of the GIT microbiota and suggest a set of indicator genes for monitoring and manipulating the microbiota to promote host health in future.
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Affiliation(s)
- Ki Young Choi
- Department of Environmental Engineering, Yonsei University, Wonju 220-710, Korea
| | - Tae Kwon Lee
- Department of Environmental Engineering, Yonsei University, Wonju 220-710, Korea
| | - Woo Jun Sul
- Department of Environmental Engineering, Yonsei University, Wonju 220-710, Korea
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Lunedo R, Fernandez-Alarcon MF, Carvalho FMS, Furlan LR, Macari M. Analysis of the intestinal bacterial microbiota in maize- or sorghum-fed broiler chickens using real-time PCR. Br Poult Sci 2015; 55:795-803. [PMID: 25358544 DOI: 10.1080/00071668.2014.975781] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
1. An experiment was conducted to study the effect of two different diets on zootechnical performance and the major bacterial groups in association with the host mucosa and dispersed in the lumen contents of the small intestine of broiler chickens. 2. The two experimental diets were maize or sorghum-based. In addition to the total bacteria, bacterial groups belonging to the Enterobacteriaceae (Enterococcus and Lactobacillus) were quantified by real-time PCR. 3. There were no differences in body weight gain and feed intake, but feed conversion ratio increased for sorghum-fed broilers at 21 and 42 d of age. 4. The Enterococcus group decreased in all gut segments from 7 to 42 d, while the Lactobacillus group increased in both ecosystems. In the ileal mucosa, the enterobacterial counts decreased from 7 to 42 d in the maize-based diet, but remained stable in the sorghum-based diet. 5. The results shed light on the spatial and temporal distribution of bacterial groups that play important physiological roles in the small intestine of chickens. Specifically, the increased Enterobacteria population in the ileum is consistent with the relatively poor feed conversion in sorghum-fed broilers.
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Affiliation(s)
- R Lunedo
- a Department of Animal Physiology and Morphology , São Paulo State University , Jaboticabal , São Paulo , Brazil
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Tsuchida S, Ushida K. Characterization of intestinal bacterial communities of western lowland gorillas ( Gorilla gorilla gorilla), central chimpanzees ( Pan troglodytes troglodytes), and a forest elephant ( Loxodonta africana cyclotis) living in Moukalaba-Doudou National Park in Gabon. TROPICS 2015. [DOI: 10.3759/tropics.23.175] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Sayaka Tsuchida
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University
| | - Kazunari Ushida
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University
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Effect of zinc on growth performance, gut morphometry, and cecal microbial community in broilers challenged with Salmonella enterica serovar typhimurium. J Microbiol 2014; 52:1002-11. [DOI: 10.1007/s12275-014-4347-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 09/24/2014] [Accepted: 10/14/2014] [Indexed: 10/24/2022]
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30
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Copado R, Arzola C, Epps SVR, Rodriguez-Almeida F, Ruiz O, Rodriguez-Muela C, Castillo YC, Corral-Luna A, Salinas J. Effect of repeated suboptimal chlorate treatment on ruminal and fecal bacterial diversity. J Food Prot 2014; 77:1588-92. [PMID: 25198852 DOI: 10.4315/0362-028x.jfp-14-140] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The minimal effective dose of sodium chlorate as an intervention to reduce the carriage of pathogenic bacteria in food-producing animals has not been clearly established. The effect of low-level oral chlorate administration to ewes was assessed by comparing the diversity of prominent bacterial populations in their gastrointestinal tract. Twelve lactating crossed Pelibuey and Blackbelly-Dorper ewes (average body weight, 65 kg) were randomly assigned (four per treatment) to receive a control treatment (TC; consisting of 3 g of NaCl per animal per day) or one of two chlorate treatments (T3 or T9; consisting of 1.8 or 5.4 g of NaClO3 per animal per day, respectively). Treatments were administered twice daily via oral gavage for 5 days. Ruminal and fecal samples were collected daily, starting 3 days before and ending 6 days after treatment, and were subjected to denaturing gradient gel electrophoresis of the 16S rRNA gene sequence amplified from total population DNA. For ruminal microbes, percent similarity coefficients (SCs) between groups varied from 23.0 to 67.5% and from 39.4 to 43.3% during pretreatment and treatment periods, respectively. During the treatment period, SCs within groups ranged from 39.4 to 90.3%, 43.3 to 86.7%, and 67.5 to 92.4% for TC, T3, and T9, respectively. For fecal microbes, SCs between groups varied from 38.0 to 85.2% and 38.0 to 94.2% during pretreatment and treatment periods, respectively. SCs for fecal populations during treatment were most varied for TC (38.0 to 67.9%), intermediate for T9 (75.6 to 92.0%), and least varied for T3 (80.6 to 90.6%). Heterogeneity within and between groups provided no evidence of an effect of chlorate treatment on ruminal or fecal microbial populations.
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Affiliation(s)
- R Copado
- Autonomous University of Nuevo Leon, Monterrey, Nuevo Leon 66451, Mexico
| | - C Arzola
- Autonomous University of Chihuahua, Chihuahua 31203, Mexico.
| | - S V R Epps
- Department of Veterinary Integrative Bioscience, Texas A&M University, College Station, Texas 77843, USA
| | | | - O Ruiz
- Autonomous University of Chihuahua, Chihuahua 31203, Mexico
| | | | | | | | - J Salinas
- Autonomous University of Tamaulipas, Ciudad Victoria, Tamaulipas 87000, Mexico
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Betancourt L, Rodriguez F, Phandanouvong V, Ariza-Nieto C, Hume M, Nisbet D, Afanador-Téllez G, Van Kley AM, Nalian A. Effect of Origanum chemotypes on broiler intestinal bacteria. Poult Sci 2014; 93:2526-35. [PMID: 25071230 DOI: 10.3382/ps.2014-03944] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Essential oils have been proposed as alternatives to antibiotic use in food animal production. This study evaluated 3 chemotypes of the Origanum genus, containing varying amounts of secondary metabolites carvacrol, thymol, and sabinene, in the broiler chicken diet. Aerial parts of Origanum vulgare L. (OL), O. vulgare L. ssp. hirtum (OH), and O. majorana (OM) were collected from a greenhouse located in the high altitude Sabana de Bogotá (Savanna of Bogotá) and O. vulgare L. ssp. hirtum (OG) produced and ground in Greece. Oregano essential oils (OEO) from these plants were obtained by steam distillation and analyzed by gas chromatography coupled to a mass spectrometer. Six treatments were evaluated: 200 mg/kg of OEO from OH, OL, and OM, 50 mg/kg of OEO from OG, 500 mg/kg of chlortetracycline, and without additives. Broiler chicks were maintained at 2,600 m above sea level, placed in brooder cages under a completely randomized design. Template DNA was isolated from duodenal, jejunal, ileal, and cecal contents in each group and bacterial 16S rDNA patterns were analyzed by denaturing gradient gel electrophoresis. Dendrograms of denaturing gradient gel electrophoresis band patterns revealed 2 main clusters, OEO-treated chicks and nontreated control chicks, in each intestinal segment. Band patterns from different gut compartments revealed major bacterial population shifts in the foregut (duodenum, jejunum, and ileum) compared with the hindgut (cecum and colon) at all ages evaluated (P < 0.05). The OEO groups showed less shift (62.7% similarity coefficient) between these 2 compartments versus the control groups (53.7% similarity coefficient). A reduction of 59% in mortality from ascites was seen in additive-supplemented groups compared with the control group. This study represents the first work to evaluate the effects of the 3 main chemotypes of Origanum genus in broilers.
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Affiliation(s)
| | - Fernando Rodriguez
- Corporación Colombiana de Investigación Agropecuaria, Corpoica, Bogotá, Colombia 344300
| | | | - Claudia Ariza-Nieto
- Corporación Colombiana de Investigación Agropecuaria, Corpoica, Bogotá, Colombia 344300
| | - Michael Hume
- USDA, Agricultural Research Center, Food and Feed Safety Research Unit, College Station, TX 77845
| | - David Nisbet
- USDA, Agricultural Research Center, Food and Feed Safety Research Unit, College Station, TX 77845
| | - German Afanador-Téllez
- Departament of Animal Production, Universidad Nacional de Colombia, Bogotá, Colombia 11001
| | | | - Armen Nalian
- Department of Biology and Biotechnology, Stephen F. Austin State University, Nacogdoches, TX 75962
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Gong J, Yin F, Hou Y, Yin Y. Review: Chinese herbs as alternatives to antibiotics in feed for swine and poultry production: Potential and challenges in application. CANADIAN JOURNAL OF ANIMAL SCIENCE 2014. [DOI: 10.4141/cjas2013-144] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Gong, J., Yin, F., Hou, Y. and Yin, Y. 2014. Chinese herbs as alternatives to antibiotics in feed for swine and poultry production: Potential and challenges in application. Can. J. Anim. Sci. 94: 223–241. Traditional Chinese medicine (TCM) has a long history of clinical practice, and its own theoretical framework focused on functions at the whole-body level. However, due to cultural differences, TCM has not been fully recognized in Western countries. With the recent development of the theory of whole-body systems biology and “-omics”, there is a new opportunity to study TCM and to close the gap between TCM and Western medicine, because of the similarity in the theoretical foundations between TCM and whole-body systems biology. The uniqueness of TCM theory and practice is the approach to maintain and restore the body balance as a whole with no or little unfavourable side effects. Recent studies have also shown that Chinese herbs used as feed additives can modulate nutritional metabolism, immune responses, and intestinal health of food-producing animals, demonstrating good potential as substitutes for dietary antibiotics. Nonetheless, some issues need to be addressed before Chinese herbs can reach their full application. This article has critically reviewed recent progresses in scientific research of Chinese herbs as feed additives and their potential to replace dietary antibiotics. Possible challenges in future application for swine and poultry production are also discussed.
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Affiliation(s)
- J. Gong
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, 93 Stone Road West, Guelph, Ontario, Canada N1G 5C9
| | - F. Yin
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, 93 Stone Road West, Guelph, Ontario, Canada N1G 5C9
- Key Laboratory of Agri-Ecological Process in Subtropical Region, Institute of Subtropical Agriculture, the Chinese Academy of Sciences, Changsha, Hunan, China 410125
| | - Y. Hou
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, Hubei, China 430023
| | - Y. Yin
- Key Laboratory of Agri-Ecological Process in Subtropical Region, Institute of Subtropical Agriculture, the Chinese Academy of Sciences, Changsha, Hunan, China 410125
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, Hubei, China 430023
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Stanley D, Hughes RJ, Moore RJ. Microbiota of the chicken gastrointestinal tract: influence on health, productivity and disease. Appl Microbiol Biotechnol 2014; 98:4301-10. [PMID: 24643736 DOI: 10.1007/s00253-014-5646-2] [Citation(s) in RCA: 333] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 02/25/2014] [Accepted: 02/26/2014] [Indexed: 12/23/2022]
Abstract
Recent advances in the technology available for culture-independent methods for identification and enumeration of environmental bacteria have invigorated interest in the study of the role of chicken intestinal microbiota in health and productivity. Chickens harbour unique and diverse bacterial communities that include human and animal pathogens. Increasing public concern about the use of antibiotics in the poultry industry has influenced the ways in which poultry producers are working towards improving birds' intestinal health. Effective means of antibiotic-independent pathogen control through competitive exclusion and promotion of good protective microbiota are being actively investigated. With the realisation that just about any change in environment influences the highly responsive microbial communities and with the abandonment of the notion that we can isolate and investigate a single species of interest outside of the community, came a flood of studies that have attempted to profile the intestinal microbiota of chickens under numerous conditions. This review aims to address the main issues in investigating chicken microbiota and to summarise the data acquired to date.
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Affiliation(s)
- Dragana Stanley
- School of Medical and Applied Sciences, Central Queensland University, Bruce Highway, Rockhampton, QLD, 4702, Australia,
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Lin J. Antibiotic growth promoters enhance animal production by targeting intestinal bile salt hydrolase and its producers. Front Microbiol 2014; 5:33. [PMID: 24575079 PMCID: PMC3920069 DOI: 10.3389/fmicb.2014.00033] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 01/17/2014] [Indexed: 11/13/2022] Open
Abstract
The growth-promoting effect of antibiotic growth promoters (AGPs) was correlated with the decreased activity of bile salt hydrolase (BSH), an intestinal bacteria-produced enzyme that exerts negative impact on host fat digestion and utilization. Consistent with this finding, independent chicken studies have demonstrated that AGP usage significantly reduced population of Lactobacillus species, the major BSH-producers in the intestine. Recent finding also demonstrated that some AGPs, such as tetracycline and roxarsone, display direct inhibitory effect on BSH activity. Therefore, BSH is a promising microbiome target for developing novel alternatives to AGPs. Specifically, dietary supplementation of BSH inhibitor may promote host lipid metabolism and energy harvest, consequently enhancing feed efficiency and body weight gain in food animals.
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Affiliation(s)
- Jun Lin
- Department of Animal Science, The University of Tennessee Knoxville, TN, USA
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Smith K, Zeng X, Lin J. Discovery of bile salt hydrolase inhibitors using an efficient high-throughput screening system. PLoS One 2014; 9:e85344. [PMID: 24454844 PMCID: PMC3891821 DOI: 10.1371/journal.pone.0085344] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Accepted: 12/03/2013] [Indexed: 01/05/2023] Open
Abstract
The global trend of restricting the use of antibiotic growth promoters (AGP) in animal production necessitates the need to develop valid alternatives to maintain productivity and sustainability of food animals. Previous studies suggest inhibition of bile salt hydrolase (BSH), an intestinal bacteria-produced enzyme that exerts negative impact on host fat digestion and utilization, is a promising approach to promote animal growth performance. To achieve the long term goal of developing novel alternatives to AGPs, in this study, a rapid and convenient high-throughput screening (HTS) system was developed and successfully used for identification of BSH inhibitors. With the aid of a high-purity BSH from a chicken Lactobacillus salivarius strain, we optimized various screening conditions (e.g. BSH concentration, reaction buffer pH, incubation temperature and length, substrate type and concentration) and establish a precipitation-based screening approach to identify BSH inhibitors using 96-well or 384-well microplates. A pilot HTS was performed using a small compound library comprised of 2,240 biologically active and structurally diverse compounds. Among the 107 hits, several promising and potent BSH inhibitors (e.g. riboflavin and phenethyl caffeate) were selected and validated by standard BSH activity assay. Interestingly, the HTS also identified a panel of antibiotics as BSH inhibitor; in particular, various tetracycline antibiotics and roxarsone, the widely used AGP, have been demonstrated to display potent inhibitory effect on BSH. Together, this study developed an efficient HTS system and identified several BSH inhibitors with potential as alternatives to AGP. In addition, the findings from this study also suggest a new mode of action of AGP for promoting animal growth.
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Affiliation(s)
- Katie Smith
- Department of Animal Science, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Ximin Zeng
- Department of Animal Science, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Jun Lin
- Department of Animal Science, University of Tennessee, Knoxville, Tennessee, United States of America
- * E-mail:
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36
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Influence of Propolis Residue on the Bacterial Flora in the Cecum of Nanbu Kashiwa. J Poult Sci 2014. [DOI: 10.2141/jpsa.0130137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Cravens R, Goss G, Chi F, De Boer E, Davis S, Hendrix S, Richardson J, Johnston S. The effects of necrotic enteritis, aflatoxin B1, and virginiamycin on growth performance, necrotic enteritis lesion scores, and mortality in young broilers. Poult Sci 2013; 92:1997-2004. [DOI: 10.3382/ps.2013-03011] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Podisi BK, Knott SA, Dunn IC, Burt DW, Hocking PM. Bone mineral density QTL at sexual maturity and end of lay. Br Poult Sci 2013; 53:763-9. [PMID: 23398420 DOI: 10.1080/00071668.2012.747674] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
1. An F₂ cross of a broiler male line and a White Leghorn layer line was used to identify quantitative trait loci (QTL) for bone density at the onset of lay and at the end of the laying period. A total of 686 measures of humeral bone density were available for analysis. 2. There was no evidence for epistasis. 3. Genome-wide significant QTL for bone density at the onset of lay were identified on chromosomes 1 (311 cM) and 8 (2 cM) and on chromosomes 1 (311 cM), 3 (57 cM) and 8 (2 cM) with a covariate for the number of yellow follicles (a proxy for the concentration of circulating oestrogen). 4. Evidence for only 4 chromosome-wide suggestive QTL were detected at the end of lay (72 weeks). 5. Analysis of the combined data confirmed two genome-wide suggestive QTL on chromosome 1 (137 and 266 cM) and on chromosomes 8 (2 cM) and 9 (10 cM) in analyses with or without the covariate. 6. Positive QTL alleles came from the broiler line with the exception of 2 suggestive QTL at the onset of lay on chromosomes 3 and 5 in an analysis with the covariate. 7. In general, QTL acted additively, except that dominant effects were identified for three suggestive QTL at the onset of lay on chromosomes 3 (57 and 187 cM) and 5 (9 cM). 8. The significant QTL in this study were at similar locations to QTL identified in a range of crosses in other publications, suggesting that they are prime candidates for the search for genes and mutations that could be used as selection criteria to improve bone strength and decrease fractures in commercial laying hens.
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Affiliation(s)
- B K Podisi
- Department of Agricultural Research, P/Bag 0033, Gaborone, Botswana
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Ma Y, Gao H, Lin F, Chen N, Xu Y, Jiang J, Li F, Lu F, Zhao M, Shi K, Cheng N, Li J. Tissue expression, association analysis between three novel SNPs of the RXRα gene and growth traits in Chinese indigenous cattle. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s11434-013-5816-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Lin J, Hunkapiller AA, Layton AC, Chang YJ, Robbins KR. Response of Intestinal Microbiota to Antibiotic Growth Promoters in Chickens. Foodborne Pathog Dis 2013; 10:331-7. [DOI: 10.1089/fpd.2012.1348] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Jun Lin
- Department of Animal Science, The University of Tennessee, Knoxville, Tennessee
| | | | - Alice C. Layton
- Center for Environmental Microbiology, The University of Tennessee, Knoxville, Tennessee
| | - Yun-Juan Chang
- Department of Animal Science, The University of Tennessee, Knoxville, Tennessee
| | - Kelly R. Robbins
- Department of Animal Science, The University of Tennessee, Knoxville, Tennessee
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Singh P, Karimi A, Devendra K, Waldroup PW, Cho KK, Kwon YM. Influence of penicillin on microbial diversity of the cecal microbiota in broiler chickens. Poult Sci 2013; 92:272-6. [PMID: 23243258 DOI: 10.3382/ps.2012-02603] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Antibiotic growth promoters have been used for growth promotion of chickens in poultry industry since 1940. Recently, concerns have been raised to the use of antibiotic growth promoters in livestock due to development of antibiotic resistance in bacteria. The objective of our study was to investigate the effect of penicillin supplementation in the feed on cecal microbiota of broiler chickens. Two groups (n = 30) of chickens were fed corn-soybean meal diets with and without supplementation of penicillin at the concentration of 55 mg/kg (ANT vs. CON, respectively). At 18 d of age, the ANT group had significantly (P ≤ 0.05) higher mean BW than the CON group (668.6 vs. 570.0 g). Cecal samples of 5 randomly selected birds were pooled from each group and used for genomic DNA isolation and PCR amplification of 16S rRNA gene; 454 pyrosequencing of the amplicons resulted in 7,881 and 11,214 sequence reads for ANT and CON groups, respectively. Phylogenetic analysis indicated that penicillin supplementation in the ANT group resulted in an elevated proportion of phylum Firmicutes from 58.15 to 91.5% and a decreased proportion of phylum Bacteroidetes from 31.1 to 2.96% compared with the CON group. Recent studies conducted in humans, pigs, and mice have shown a similar shift in gut microbiota in obese individuals compared with the lean ones, indicating that this microbial shift could be responsible for the increase in energy harvest and BW. The results of this study suggest that the growth-promoting effect of penicillin supplementation in broilers may be mediated by a similar microbial process.
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Affiliation(s)
- Pallavi Singh
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville 72701, USA
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Sun H, Tang JW, Fang CL, Yao XH, Wu YF, Wang X, Feng J. Molecular analysis of intestinal bacterial microbiota of broiler chickens fed diets containing fermented cottonseed meal. Poult Sci 2013; 92:392-401. [PMID: 23300306 DOI: 10.3382/ps.2012-02533] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The study was conducted to investigate the effects of dietary inclusion of fermented cottonseed meal (FCM) on the ileal and cecal bacterial microbiota of broiler chickens. A total of 300 newborn yellow-feathered broiler chickens were randomly divided into 2 treatments with 3 replicates each (50 birds per replicate): control and 80 g/kg of FCM group. The feeding trial lasted for 42 d. Ileal and cecal digesta samples were collected from 8 chicks per replicate at 21 and 42 d of age to determine the composition of bacterial microbiota using denaturing gradient gel electrophoresis, cloning, sequencing, and real-time quantitative PCR analysis. The results demonstrated that the microbial composition in the ileum and cecum were considerably affected by the diet. The similarity dendrogram of banding profiles showed a more rapid stabilization of intestinal bacterial microbiota in broilers fed diets supplemented with FCM, compared with that of the birds fed the control diet. No significant difference was observed in total number of bands and Shannon-Weaver index, indicating that FCM had no effects on bacterial diversity. However, enumeration of bacteria in the ileal and cecal contents by quantitative PCR showed an increased (P < 0.05) population of lactobacilli, as well as a decreased (P < 0.05) Escherichia coli number by the dietary inclusion of FCM. In summary, dietary inclusion of FCM did not affect the intestinal microbial diversity but shifted intestinal microbiota, with a more homogenous population and an increased colonization of lactobacilli. The results also support the concept that dietary FCM inclusion could promote the beneficial bacteria in the intestinal tract.
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Affiliation(s)
- H Sun
- College of Animal Sciences, Zhejiang University, No. 388, Yuhangtang Road, Hangzhou 310058, P R China
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Identification and characterization of a bile salt hydrolase from Lactobacillus salivarius for development of novel alternatives to antibiotic growth promoters. Appl Environ Microbiol 2012; 78:8795-802. [PMID: 23064348 DOI: 10.1128/aem.02519-12] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Antibiotic growth promoters (AGPs) have been used as feed additives to improve average body weight gain and feed efficiency in food animals for more than 5 decades. However, there is a worldwide trend to limit AGP use to protect food safety and public health, which raises an urgent need to discover effective alternatives to AGPs. The growth-promoting effect of AGPs has been shown to be highly correlated with the decreased activity of intestinal bile salt hydrolase (BSH), an enzyme that is produced by various gut microflora and involved in host lipid metabolism. Thus, BSH inhibitors are likely promising feed additives to AGPs to improve animal growth performance. In this study, the genome of Lactobacillus salivarius NRRL B-30514, a BSH-producing strain isolated from chicken, was sequenced by a 454 GS FLX sequencer. A BSH gene identified by genome analysis was cloned and expressed in an Escherichia coli expression system for enzymatic analyses. The BSH displayed efficient hydrolysis activity for both glycoconjugated and tauroconjugated bile salts, with slightly higher catalytic efficiencies (k(cat)/K(m)) on glycoconjugated bile salts. The optimal pH and temperature for the BSH activity were 5.5 and 41°C, respectively. Examination of a panel of dietary compounds using the purified BSH identified some potent BSH inhibitors, in which copper and zinc have been recently demonstrated to promote feed digestion and body weight gain in different food animals. In sum, this study identified and characterized a BSH with broad substrate specificity from a chicken L. salivarius strain and established a solid platform for us to discover novel BSH inhibitors, the promising feed additives to replace AGPs for enhancing the productivity and sustainability of food animals.
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Czerwiński J, Højberg O, Smulikowska S, Engberg RM, Mieczkowska A. Effects of sodium butyrate and salinomycin upon intestinal microbiota, mucosal morphology and performance of broiler chickens. Arch Anim Nutr 2012; 66:102-16. [PMID: 22641923 DOI: 10.1080/1745039x.2012.663668] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The effect of dietary sodium butyrate (SB) or salinomycin (SAL) or both additives on performance, small intestinal morphology and microbial ecology of broiler chickens was studied. A growth trial was conducted with 96 Ross 308 female broilers from 1 to 30 days of age. Four treatment groups were fed with a non-supplemented control diet or three experimental diets supplemented with i) 300 mg SB (Adimix 30 coated) per kg, ii) 60 mg SAL (Sacox) per kg or iii) both additives in combination. Feed intake and body-weight gain decreased and gain-to-feed ratio increased due to SAL supplementation, while addition of SB did not affect performance in comparison with the control diet but positively affected feed intake and body-weight gain in comparison with birds fed the SAL-supplemented diet. Villus height in jejunum decreased, while crypt depth increased due to SAL supplementation. Addition of SB increased crypt depth in jejunum. No significant effect of either additive was observed in ileum morphology. Total short-chain organic acids concentration in ileal digesta decreased with SAL supplementation, mainly due to lower lactic acid concentration, but no effects were observed in the caeca. The SAL supplementation was accompanied by a pH increase in ileum and a pH decrease in caecum. No significant effect of SB addition was observed for these parameters. Total bacterial numbers and Lactobacillus [lactic acid bacteria (LAB)] counts in ileal and caecal contents were lower in birds fed with SAL-supplemented diet in comparison with birds fed with control or SB diet. DNA fingerprints revealed SAL supplementation to affect the microbial population by suppressing dominating LAB, potentially L. aviarius. The presented results show that dietary SAL, supplemented alone or in combination with SB, suppressed the microbial activity and altered the microbial community structure mainly in ileum. SAL alone negatively affected feed intake and body-weight gain; however, the effect was ameliorated by SB supplementation.
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Affiliation(s)
- Jan Czerwiński
- The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, Jablonna, Poland.
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Hume ME, Barbosa NA, Dowd SE, Sakomura NK, Nalian AG, Martynova-Van Kley A, Oviedo-Rondón EO. Use of pyrosequencing and denaturing gradient gel electrophoresis to examine the effects of probiotics and essential oil blends on digestive microflora in broilers under mixed Eimeria infection. Foodborne Pathog Dis 2011; 8:1159-67. [PMID: 21793655 DOI: 10.1089/fpd.2011.0863] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
A protective digestive microflora helps prevent and reduce broiler infection and colonization by enteropathogens. In the current experiment, broilers fed diets supplemented with probiotics and essential oil (EO) blends were infected with a standard mixed Eimeria spp. to determine effects of performance enhancers on ileal and cecal microbial communities (MCs). Eight treatment groups included four controls (uninfected-unmedicated [UU], unmedicated-infected, the antibiotic BMD plus the ionophore Coban as positive control, and the ionophore as negative control), and four treatments (probiotics BC-30 and Calsporin; and EO, Crina Poultry Plus, and Crina PoultryAF). Day-old broilers were raised to 14 days in floor pens on used litter and then were moved to Petersime batteries and inoculated at 15 days with mixed Eimeria spp. Ileal and cecal samples were collected at 14 days and 7 days postinfection. Digesta DNA was subjected to pyrosequencing for sequencing of individual cecal bacteria and denaturing gradient gel electrophoresis (DGGE) for determination of changes in ileal and cecal MC according to percentage similarity coefficient (%SC). Pyrosequencing is very sensitive detecting shifts in individual bacterial sequences, whereas DGGE is able to detect gross shifts in entire MC. These combined techniques offer versatility toward identifying feed additive and mild Eimeria infection modulation of broiler MC. Pyrosequencing detected 147 bacterial species sequences. Additionally, pyrosequencing revealed the presence of relatively low levels of the potential human enteropathogens Campylobacter sp. and four Shigella spp. as well as the potential poultry pathogen Clostridiun perfringens. Pre- and postinfection changes in ileal (56%SC) and cecal (78.5%SC) DGGE profiles resulted from the coccidia infection and with increased broiler age. Probiotics and EO changed MC from those seen in UU ilea and ceca. Results potentially reflect the performance enhancement above expectations in comparison to broilers not given the probiotics or the specific EO blends as feed supplements.
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Affiliation(s)
- Michael E Hume
- Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U.S. Department of Agriculture, College Station, Texas 77845, USA.
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Influence of antimicrobial feed additives on broiler commensal posthatch gut microbiota development and performance. Appl Environ Microbiol 2011; 77:3380-90. [PMID: 21441326 DOI: 10.1128/aem.02300-10] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The effects of avilamycin, zinc bacitracin, and flavophospholipol on broiler gut microbial community colonization and bird performance in the first 17 days posthatch were investigated. Significant differences in gut microbiota associated with gut section, dietary treatment, and age were identified by terminal restriction fragment length polymorphism (T-RFLP), although no performance-related differences between dietary treatments were detected. Similar age-related shifts in the gut microbiota were identified regardless of diet but varied between the ilea and ceca. Interbird variabilities in ileal bacterial communities were reduced (3 to 7 days posthatch) in chicks fed with feed containing antimicrobial agents. Avilamycin and flavophospholipol had the most consistent effect on gut microbial communities. Operational taxonomic units (OTU) linked to changes in gut microbiota in birds on antimicrobial-supplemented diets were characterized and identified. Some OTUs could be identified to the species level; however, the majority could be only tentatively classified to the genus, family, order, or domain level. OTUs 140 to 146 (Lachnospiraceae), OTU 186/188 (Lactobacillus johnsonii), OTU 220 (Lachnospiraceae), OTUs 284 to 288 (unclassified bacterial spp. or Ruminococcaceae), OTU 296/298 (unclassified bacterium or Clostridiales), and OTU 480/482 (Oxalobacteraceae) were less prevalent in the guts of chicks fed antimicrobial-supplemented diets. OTU 178/180 (Lactobacillus crispatus), OTU 152 (Lactobacillus reuteri or unclassified Clostridiales), OTU 198/200 (Subdoligranulum spp.), and OTU 490/492 (unclassified bacterium or Enterobacteriaceae) were less prevalent in the gut of chicks raised on the antimicrobial-free diet. The identification of key bacterial species influenced by antimicrobial-supplemented feed immediately posthatch may assist in the formulation of diets that facilitate beneficial gut microbial colonization and, hence, the development of alternatives to current antimicrobial agents in feed for sustainable poultry production.
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Feng Y, Gong J, Yu H, Jin Y, Zhu J, Han Y. Identification of changes in the composition of ileal bacterial microbiota of broiler chickens infected with Clostridium perfringens. Vet Microbiol 2010; 140:116-21. [DOI: 10.1016/j.vetmic.2009.07.001] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Revised: 06/22/2009] [Accepted: 07/01/2009] [Indexed: 10/20/2022]
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Petersson A, Domig KJ, Nagel P, Zollitsch W, Hagmüller W, Kneifel W. Denaturing gradient gel electrophoresis (DGGE)-based monitoring of intestinal lactobacilli and bifidobacteria of pigs during a feeding trial. Arch Anim Nutr 2009; 63:112-26. [DOI: 10.1080/17450390902733959] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Brisbin J, Gong J, Lusty C, Sabour P, Sanei B, Han Y, Shewen P, Sharif S. Influence of In-Feed Virginiamycin on the Systemic and Mucosal Antibody Response of Chickens. Poult Sci 2008; 87:1995-9. [DOI: 10.3382/ps.2008-00159] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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