Microbial diversity in the rumen, reticulum, omasum, and abomasum of yak on a rapid fattening regime in an agro-pastoral transition zone

Dan Xue; Huai Chen; Xiaolin Luo; Jiuqiang Guan; Yixin He; Xinquan Zhao

doi:10.1007/s12275-018-8133-0

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Microbial diversity in the rumen, reticulum, omasum, and abomasum of yak on a rapid fattening regime in an agro-pastoral transition zone: Dan Xue ^1,2, Huai Chen ^1,2, Xiaolin Luo ³, Jiuqiang Guan ³, Yixin He ^1,2, Xinquan Zhao ^1,4; Journal of Microbiology 2018;56(10):734-743
DOI: https://doi.org/10.1007/s12275-018-8133-0
Published online: August 22, 2018

¹Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration, Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, P. R. China, ²Zoige Peatland and Global Change Research Station, Chinese Academy of Sciences, Hongyuan 624400, P. R. China, ³Sichuan Academy of Grassland Sciences, Chengdu 611731, P. R. China, ⁴Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining 810008, P. R. China¹Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration, Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, P. R. China, ²Zoige Peatland and Global Change Research Station, Chinese Academy of Sciences, Hongyuan 624400, P. R. China, ³Sichuan Academy of Grassland Sciences, Chengdu 611731, P. R. China, ⁴Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining 810008, P. R. China

Corresponding author: Huai Chen , Tel: +86-28-87843008;,
Xiaolin Luo , Tel: +86-28-87843008;,

Received: 13 March 2018 • Revised: 2 July 2018 • Accepted: 2 July 2018

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Abstract

The ruminant digestive system harbors a complex gut microbiome, which is poorly understood in the case of the four stomach compartments of yak. High-throughput sequencing and quantitative PCR were used to analyse microbial communities in the rumen, reticulum, omasum, and abomasum of six domesticated yak. The diversity of prokaryotes was higher in reticulum and omasum than in rumen and abomasum. Bacteroidetes predominated in the four stomach compartments, with abundance gradually decreasing in the trend rumen > reticulum > omasum > abomasum. Microorganism composition was different among the four compartments, all of which contained high levels of bacteria, methanogens, protozoa and anaerobic fungi. Some prokaryotic genera were associated with volatile fatty acids and pH. This study provides the first insights into the microorganism composition of four stomach compartments in yak, and may provide a foundation for future studies in this area.

Keywords: anaerobic; microbiome diversity; qPCR; MiSeq sequencing; Qinghai-Tibetan Plateau

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Microbial diversity in the rumen, reticulum, omasum, and abomasum of yak on a rapid fattening regime in an agro-pastoral transition zone

J. Microbiol. 2018;56(10):734-743. Published online August 22, 2018

DOI: https://doi.org/10.1007/s12275-018-8133-0

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