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Sward type alters the relative abundance of members of the rumen microbial ecosystem in dairy cows
Smith, Paul E. Enriquez-Hidalgo, Daniel Hennessy, Deirdre McCabe, Matthew S. Kenny, David A. Kelly, Alan K. Waters, Sinéad M.
Smith, Paul E.
Enriquez-Hidalgo, Daniel
Hennessy, Deirdre
McCabe, Matthew S.
Kenny, David A.
Kelly, Alan K.
Waters, Sinéad M.
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2020-06-09
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Smith, P.E., Enriquez-Hidalgo, D., Hennessy, D. et al. Sward type alters the relative abundance of members of the rumen microbial ecosystem in dairy cows. Sci Rep 10, 9317 (2020). https://doi.org/10.1038/s41598-020-66028-3
Abstract
The performance of ruminant livestock has been shown to beneft from the enhanced nutritive value
and herbage yield associated with clover incorporation in the grazing sward. However, little research
to date has been conducted investigating the efects of mixed swards containing white clover on
the composition of the rumen microbiome. In this study, the rumen microbial composition of late
lactation dairy cows grazing perennial ryegrass only (PRG; n=20) or perennial ryegrass and white
clover (WCPRG; n=19) swards, was characterised using 16S rRNA amplicon sequencing. PERMANOVA
analysis indicated diet signifcantly altered the composition of the rumen microbiome (P=0.024).
Subtle shifts in the relative abundance of 14 bacterial genera were apparent between diets, including
an increased relative abundance of Lachnospira (0.04 vs. 0.23%) and Pseudobutyrivibrio (1.38 vs.
0.81%) in the WCPRG and PRG groups, respectively. The composition of the archaeal community was
altered between dietary groups, with a minor increase in the relative abundance of Methanosphaera
in the WCPRG observed. Results from this study highlight the potential for sward type to infuence the
composition of the rumen microbial community.