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Bacterial census of poultry intestinal microbiome
S Wei1, M Morrison, Z Yu
1Department of Animal Sciences, The Ohio State University, Columbus, OH, USA.
Poultry Science
|February 26, 2013
Summary
This study reveals distinct gut bacterial communities in chickens and turkeys, with Firmicutes, Bacteroidetes, and Proteobacteria dominating. Analyzing 16S rRNA gene sequences provides a framework for understanding poultry microbial diversity.
Area of Science:
- Microbiology
- Bioinformatics
- Comparative Genomics
Background:
- The intestinal tract harbors a complex microbiome crucial for host health.
- Understanding avian gut microbial diversity is essential for poultry production and disease prevention.
- Existing databases contain valuable 16S rRNA gene sequences from poultry, suitable for comprehensive analysis.
Purpose of the Study:
- To create a phylogenetic diversity census of bacteria in chicken and turkey intestines.
- To analyze curated 16S rRNA gene sequences from public databases.
- To establish a framework for future research on poultry gut microbiomes.
Main Methods:
- Collected and curated 16S rRNA gene sequences from chicken (3,184) and turkey (1,345) gastrointestinal tracts.
- Utilized phylogenetic and statistical analyses to identify operational taxonomic units (OTUs) at 0.03 phylogenetic distance.
- Analyzed sequence data from GenBank, RDP, and Silva databases.
Main Results:
- Identified 915 and 464 species-equivalent OTUs in chickens and turkeys, respectively.
- Firmicutes, Bacteroidetes, and Proteobacteria were the dominant phyla (>90% of sequences) in both species.
- Chickens and turkeys exhibited distinct intestinal microbiomes with only 16% similarity at the species level.
Conclusions:
- Poultry gut microbiomes are species-specific, with significant differences between chickens and turkeys.
- The study identified key bacterial phyla and genera, highlighting knowledge gaps in poultry microbial diversity.
- The generated census provides a foundation for future studies and the development of analytical tools for poultry gut health.
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