Increased Yearling Weight Gain Is Associated with a Distinct Faecal Microbial Profile

Author(s)
Maslen, Brianna N
Duff, Christian
Clark, Samuel A
Van Der Werf, Julius
White, Jason D
Pant, Sameer D
Publication Date
2023-10-01
Abstract
<p>Microbial communities inhabiting the gut have the ability to influence physiological processes contributing to livestock production and performance. Livestock enterprises rely on animal production traits such as growth performance for profit. Previous studies have shown that gut microbiota are correlated to growth performance and could even influence it. The aim of this study was to characterise the faecal microbial profiles of Angus steers with high and low ADG at both weaning and yearling stages by profiling 16S rRNA gene sequences from rectal faecal samples. When microbial profiles were compared in terms of relative abundances, LEfSe analysis, alpha diversity metrics, and beta diversity, at the weaning stage, few significant differences were found between the high and low ADG groups. However, at yearling stage, microbial profiles significantly differed between the high and low ADG groups. The relative abundances of eight phyla and six genera significantly differed between the two groups. Alpha diversity metrics showed a significant decrease (p = 0.001) in species richness in the high ADG group. Similarly, beta diversity analysis showed that samples clustered clearly according to high and low ADG groups at yearling stage, indicating that phylogenetic similarity between the two ADG groups was significantly reduced (p = 0.005).</p>
Citation
Animals, 13(19), p. 1-15
ISSN
2076-2615
Pubmed ID
37835668
Link
Publisher
MDPI AG
Rights
Attribution 4.0 International
Title
Increased Yearling Weight Gain Is Associated with a Distinct Faecal Microbial Profile
Type of document
Journal Article
Entity Type
Publication

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