Characterising the bacterial microbiota across the gastrointestinal tracts of dairy cattle: membership and potential function

摘要: The bacterial community composition and function in the gastrointestinal tracts (GITs) of dairy cattle is very important, since it can influence milk production host health. However, our understanding communities GITs still limited. This study analysed ten distinct GIT sites (the digesta mucosa rumen, reticulum, omasum, abomasum, duodenum, jejunum, ileum, cecum, colon rectum) six cattle. observed 542 genera belonging to 23 phyla distributed throughout GITs, with Firmicutes, Bacteroidetes Proteobacteria predominating. In addition, data revealed significant spatial heterogeneity composition, diversity species abundance distributions microbiota. Furthermore, inferred differences predicted metagenomic profiles among regions. particular, relative abundances genes involved carbohydrate metabolism were overrepresented samples forestomaches, related amino acid mainly enriched mucosal samples. general, this provides first deep insights into microbiota cattle, may serve as a foundation for future studies area.