生物
瘤胃
厚壁菌
拟杆菌
微生物群
碳水化合物代谢
消化(炼金术)
食品科学
毛螺菌科
瘤胃球菌
肠道菌群
生物化学
16S核糖体RNA
发酵
基因
生物信息学
化学
色谱法
作者
Hui Jiang,Han-Wen Cao,Zhi-Xin Chai,Xiao-Ying Chen,Cheng-Fu Zhang,Yong Zhu,Jin-Wei Xin
出处
期刊:Physiological Genomics
[American Physiological Society]
日期:2022-11-07
卷期号:54 (12): 514-525
标识
DOI:10.1152/physiolgenomics.00112.2022
摘要
Rumen microorganisms play important roles in the healthy growth of yaks. This study investigated changes in yak rumen microbiome during natural grazing at the warm seasons and supplementary feeding at cold seasons. High-throughput sequencing of 16S rRNA and metagenome analysis were conducted to investigate the structures and functions of yak rumen microbial communities. The results indicated that Bacteroidetes and Firmicutes were the most abundant phyla. In addition, Bacteroidetes might play a more important role than Firmicutes during the supplementary feeding stage (spring and winter), but less during natural grazing stage (summer and autumn). KEGG analysis showed that the amino sugar and nucleotide sugar metabolism, glycolysis/gluconeogenesis, pyruvate metabolism, starch and sucrose metabolism, and fructose and mannose metabolism were the main pathways in the microbial community, which were significantly different between seasons. The carbohydrate-active enzymes (CAZyme) annotation revealed that cellulose was an important carbon source for microorganisms in yak rumen. Glycoside hydrolases (GHs) were the most abundant class of CAZymes, followed by glycosyl transferases (GTs), which were important to digestion of oil, cellulose, and hemicellulose in food. These results contribute to the understanding of microbial components and functions in yak rumen.
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