Animal Bioscience

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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Characterization of the bacterial microbiota across the different intestinal segments of the Qinghai semi-fine wool sheep on the Qinghai-Tibetan Plateau

  • Wang, Xungang (Northwest Institute of Plateau Biology, Chinese Academy of Sciences) ;
  • Hu, Linyong (Northwest Institute of Plateau Biology, Chinese Academy of Sciences) ;
  • Liu, Hongjin (Northwest Institute of Plateau Biology, Chinese Academy of Sciences) ;
  • Xu, Tianwei (Northwest Institute of Plateau Biology, Chinese Academy of Sciences) ;
  • Zhao, Na (Northwest Institute of Plateau Biology, Chinese Academy of Sciences) ;
  • Zhang, Xiaoling (Northwest Institute of Plateau Biology, Chinese Academy of Sciences) ;
  • Geng, Yuanyue (Northwest Institute of Plateau Biology, Chinese Academy of Sciences) ;
  • Kang, Shengping (Northwest Institute of Plateau Biology, Chinese Academy of Sciences) ;
  • Xu, Shixiao (Northwest Institute of Plateau Biology, Chinese Academy of Sciences)
  • Received : 2020.12.03
  • Accepted : 2021.04.23
  • Published : 2021.12.01
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Abstract

Objective: The intestinal microbiota enhances nutrient absorption in the host and thus promotes heath. Qinghai semi-fine wool sheep is an important livestock raised in the Qinghai-Tibetan Plateau; however, little is known about the bacterial microbiota of its intestinal tract. The aim of this study was to detect the microbial characterization in the intestinal tract of the Qinghai semi-fine wool sheep. Methods: The bacterial profiles of the six different intestinal segments (duodenum, jejunum, ileum, cecum, colon and rectum) of Qinghai semi-fine wool sheep were studied using 16S rRNA V3-V4 hypervariable amplicon sequencing. Results: A total of 2,623,323 effective sequences were obtained, and 441 OTUs shared all six intestinal segments. The bacterial diversity was significantly different among the different intestinal segments, and the large intestine exhibited higher bacterial diversity than the small intestine. Firmicutes, Bacteroidetes, and Patescibacteria were the dominant phyla in these bacterial communities. Additionally, at the genus level, Prevotella_1, Candidatus_Saccharimonas, and Ruminococcaceae_UCG-005 were the most predominant genus in duodenal segment, jejunal and ileal segments, and cecal, colonic, and rectal segments, respectively. We predicted that the microbial functions and the relative abundance of the genes involved in carbohydrate metabolism were overrepresented in the intestinal segments of Qinghai semi-fine wool sheep. Conclusion: The bacterial communities and functions differed among different intestinal segments. Our study is the first to provide insights into the composition and biological functions of the intestinal microbiota of Qinghai semi-fine wool sheep. Our results also provide useful information for the nutritional regulation and production development in Qinghai semi-fine wool sheep.

Keywords

Acknowledgement

This work was supported by the Joint Research Project of Sanjiangyuan National Park (YHZX-2020-7), the Second Comprehensive Scientific Expedition to the Qinghai-Tibet Plateau (2019QZKK040104), Strategic Priority Research Program of Chinese Academy of Sciences (XDA23060603, XDA2005010406), Science and technology support program of Qinghai Province (2020-NK-166, 2019-SF-149).

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