The Rumen Specific Bacteriome in Dry Dairy Cows and Its Possible Relationship with Phenotypes

Animals

Yu-Lun Kuo¹  Shang-Tse Ho²  Sheng-Yao Wang²  Ming-Ju Chen²  Po-Wen Tu²  Kuan-Yi Li²  Shih-Te Chuang³  Jia-Shian Shiu⁴ 

[1] Biotools Co., Ltd., New Taipei City 221, Taiwan;Department of Animal Science and Technology, National Taiwan University, Taipei 106, Taiwan;Department of Veterinary Medicine, National Chung Hsing University, Taichung 402, Taiwan;Hengchun Branch, Livestock Research Institute, Council of Agriculture, Executive Yuan, Pingtung 946, Taiwan;

关键词: dry period;    rumen microbiota;    physiological roles;    Prevotella;    Ruminococcus;   

DOI  :  10.3390/ani10101791

来源: DOAJ

【 摘 要 】

Most microbiome studies of dairy cows have investigated the compositions and functions of rumen microbial communities in lactating dairy cows. The importance of the relationships among hosts, microbiota, diet composition, and milk production remains unknown in dry dairy cows. Thus, in the present study, the composition of the rumen microbiome in cows from three dairy farms was investigated to identify core bacteria contributing to various physiological roles during rumen fermentation in dry dairy cows. The results indicated that ruminal fluid in dry dairy cows from different regional farms had core rumen microbiota that could be clearly distinguished from that of cows of the other farms. Further identification of key microorganisms associated with each farm revealed that Prevotella, Methanobrevibacter, Pseudobutyrivibrio, Ruminococcus, Bacteroides, and Streptococcus were major contributors. Spearman’s correlation indicated that the abundance of genera such as Prevotella and Ruminococcus in dry dairy cows could indicate milk yield in the previous lactating period. Functional pathway analysis of the rumen bacterial communities demonstrated that amino acid metabolism and carbohydrate metabolism were the major pathways. Our findings provide knowledge of the composition and predicted functions of rumen microbiota in dry dairy cows from regional farms, which underscore the importance of the relationships among hosts, microbiota, diet composition, and milk production.

【 授权许可】

Unknown