The dynamic distribution of the rectal microbiota in Holstein dairy calves provides a framework for understanding early-life gut health.

ABSTRACT: The posterior intestinal microbiota plays a vital role in the growth and health of Holstein dairy calves. However, its establishment and dynamic changes during early development remain unclear. The aim of this study was to investigate microbial colonization and development in the rectum of calves within the first 70 d after birth. Here, 96 rectal content samples were collected from 8 Holstein dairy calves at 12 time points and analyzed using 16S rRNA gene sequencing. The microbial alpha diversity increased with age. The bacterial community displayed a distinct dynamic distribution. The phylum Proteobacteria was replaced by Firmicutes and Bacteroidetes after d 3. The colonization process of bacterial genera in the rectum of neonatal calves can be divided into 2 periods: the colonization per

SUBMITTER: Huang Q 

PROVIDER: S-EPMC11617247 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature