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Author Spotlight: Advancing Intestinal Bacteria Cultivation for Poultry
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Xylo-oligosaccharides and virginiamycin differentially modulate gut microbial composition in chickens
Mohsen Pourabedin1, Leluo Guan2, Xin Zhao1
1Department of Animal Science, McGill University, 21111 Lakeshore Road, Ste-Anne-De-Bellevue, Quebec Canada.
Microbiome
|April 16, 2015
Summary
Xylo-oligosaccharides (XOS) and virginiamycin (VIRG) alter broiler chicken gut bacteria, with XOS increasing Lactobacillus and VIRG enriching other genera. Both improved feed efficiency, suggesting a role in animal health.
Area of Science:
- Animal Science
- Microbiology
- Gut Health
Background:
- Antibiotic resistance necessitates alternatives to antibiotic growth promoters (AGPs).
- Prebiotic dietary fibers like xylo-oligosaccharides (XOS) may mitigate negative effects of AGP bans.
- Mechanisms of AGP and prebiotic effects on animal health are not fully understood.
Purpose of the Study:
- Evaluate changes in broiler chicken gut microbiota induced by XOS and virginiamycin (VIRG).
- Investigate the impact of XOS and VIRG on microbial composition and short-chain fatty acid production.
- Correlate microbial changes with animal growth performance.
Main Methods:
- Pyrosequencing of the 16S rRNA gene to analyze gut microbiota composition.
- Dietary supplementation with XOS and VIRG in broiler chickens.
- Measurement of cecal acetate and propionate concentrations.
- Monitoring of feed conversion efficiency.
Main Results:
- XOS supplementation increased Lactobacillus abundance in the cecum.
- VIRG treatment enriched Propionibacterium and Corynebacterium genera in the ileum.
- Both XOS and VIRG improved feed conversion efficiency from day 7 to 21.
- Acetate and propionate concentrations increased in XOS- and VIRG-fed groups, respectively.
- Temporal variations in gut microbiota were observed with age.
Conclusions:
- XOS and VIRG modify the relative abundance of gut bacteria but not overall diversity.
- Increased Lactobacillus and acetate production in XOS-treated chickens may enhance intestinal health.
- These findings provide insights into the mechanisms of prebiotics and antibiotics in poultry.
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