Bacterial community structure in the rumen and hindgut is associated with nitrogen efficiency in Holstein cows.

ABSTRACT: Nitrogen efficiency (Neff; milk N/N intake) in dairy cows is limited and most of the consumed N is excreted in manure. Despite the crucial role of the gastrointestinal microbiome on N metabolism, associations between bacterial communities at different sections and Neff are not fully elucidated. Enhanced understanding of host-microbiome interactions can provide insights to improve Neff in dairy cows. Twenty-three Holstein cows were selected, and their Neff were determined using a N balance approach. From the cohort of cows, six cows were classified as low Neff and five cows as high Neff and their rumen and fecal bacterial communities were profiled using amplicon sequence variants (ASV) based on 16S rRNA gene sequencing. Then, relationships between differentially abundant bacterial features

SUBMITTER: De La Guardia-Hidrogo VM 

PROVIDER: S-EPMC10317951 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature