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Rumen bacterial community responses to DPA, EPA and DHA in cattle and sheep: a comparative in vitro study.

Carreño, D.; Toral, P.G.; Pinloche, E.; Belenguer, A.; Yáñez-Ruiz, D.R.; Herv�s, G.; McEwan, N.R.; Newbold, C.J.; Frutos, P.


D. Carreño

P.G. Toral

E. Pinloche

A. Belenguer

D.R. Yáñez-Ruiz

G. Herv�s

N.R. McEwan

C.J. Newbold

P. Frutos


The role of marine lipids as modulators of ruminal biohydrogenation of dietary unsaturated fatty acids may be explained by the effects of their n-3 polyunsaturated fatty acids (PUFA) on the bacterial community. However, the impact of individual PUFA has barely been examined, and it is uncertain which bacteria are truly involved in biohydrogenation. In addition, despite interspecies differences in rumen bacterial composition, we are not aware of any direct comparison of bovine and ovine responses to dietary PUFA. Therefore, rumen fluid from cannulated cattle and sheep were used as inocula to examine in vitro the effect of 20:5n-3 (EPA), 22:5n-3 (DPA), and 22:6n-3 (DHA) on the bacterial community. Amplicon 16 S rRNA sequencing suggested that EPA and DHA had a greater contribution to the action of marine lipids than DPA both in cattle and sheep. Certain effects were exclusive to each ruminant species, which underlines the complexity of rumen microbial responses to dietary fatty acids. Based on changes in bacterial abundance, Barnesiella, Prevotella, Paraprevotella, Hallela, Anaerovorax, Succiniclasticum, Ruminococcus and Ruminobacter may be involved in the ruminal response in biohydrogenation to the addition of marine lipids, but further research is necessary to confirm their actual role in ruminal lipid metabolism.


CARREÑO, D., TORAL, P.G., PINLOCHE, E., BELENGUER, A., YÁÑEZ-RUIZ, D.R., HERVÁS, G., MCEWAN, N.R., NEWBOLD, C.J. and FRUTOS, P. 2019. Rumen bacterial community responses to DPA, EPA and DHA in cattle and sheep: a comparative in vitro study. Scientific reports [online], 9, article number 11857. Available from:

Journal Article Type Article
Acceptance Date Aug 2, 2019
Online Publication Date Aug 14, 2019
Publication Date Dec 31, 2019
Deposit Date Aug 29, 2019
Publicly Available Date Aug 29, 2019
Journal Scientific Reports
Electronic ISSN 2045-2322
Publisher Springer
Peer Reviewed Peer Reviewed
Volume 9
Issue 1
Article Number 11857
Keywords Rumen bacterial; Sheep; Cattle; Fatty acids; Bacteria; Interspecies
Public URL


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