Nishihara, Koki

van Niekerk, Jolet

Innes, David

He, Zhixiong

Cánovas, Angela

Guan, Le Luo

Steele, Michael

2023-09

<p>This study aims to characterize the functional changes of the rumen epithelium associated with ruminal short-chain fatty acid (SCFA) concentration and epithelium-attached microbes during the weaning transition in dairy calves. Ruminal SCFA concentrations were determined, and transcriptome and microbiota profiling in biopsied rumen papillae were obtained from Holstein calves before and after weaning using RNA- and amplicon sequencing. Metabolic pathway analysis showed that pathways related to SCFA metabolism and cell apoptosis were up- and down-regulated postweaning, respectively. Functional analysis showed that genes related to SCFA absorption, metabolism, and protective roles against oxidative stress were positively correlated with ruminal SCFA concentrations. The relative abundance of epithelium-attached <i>Rikenellaceae</i> RC9 gut group and <i>Campylobacter</i> was positively correlated with genes involved in SCFA absorption and metabolism, suggesting that these microbes can cooperatively affect host functions. Future research should examine the contribution of attenuated apoptosis on rumen epithelial functional shifts during the weaning transition.</p>

Genomics, 115(5), p. 1-10

1089-8646

0888-7543

https://hdl.handle.net/1959.11/63139

en

Academic Press

Attribution 4.0 International

Transcriptome profiling revealed that key rumen epithelium functions change in relation to short-chain fatty acids and rumen epithelium-attached microbiota during the weaning transition

Journal Article

Publication