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Characterisation of the effect of day length, and associated differences in dietary intake, on the gut microbiota of Soay sheep.

Thomas, Nadine A.; Olvera-Ramirez, Andrea M.; Abecia, Leticia; Adam, Clare L.; Edwards, Joan E.; Cox, Georgina F.; Findlay, Patricia A.; Destables, Elodie; Wood, Tracy A.; McEwan, Neil R.

Authors

Nadine A. Thomas

Andrea M. Olvera-Ramirez

Leticia Abecia

Clare L. Adam

Joan E. Edwards

Georgina F. Cox

Patricia A. Findlay

Elodie Destables

Tracy A. Wood

Neil R. McEwan



Abstract

Differences in the rumen bacterial community have been previously reported for Soay sheep housed under different day length conditions. This study extends this previous investigation to other organs of the digestive tract, as well as the analysis of ciliated protozoa and anaerobic fungi. The detectable concentrations of ciliated protozoa and anaerobic fungi decreased with increased day length in both the rumen and large colon, unlike those of bacteria where no effect was observed. Conversely, bacterial community composition was affected by day length in both the rumen and large colon, but the community composition of the detectable ciliated protozoa and anaerobic fungi was not affected. Day length associated differences in the bacterial community composition extended to all of the organs examined, with the exception of the duodenum and the jejunum. It is proposed that differences in rumen fill and ruminal ‘by-pass’ nutrients together with endocrinological changes cause the observed effects of day length on the different gut microbial communities.

Journal Article Type Article
Publication Date Sep 30, 2019
Journal Archives of microbiology
Print ISSN 0302-8933
Electronic ISSN 1432-072X
Publisher Springer (part of Springer Nature)
Peer Reviewed Peer Reviewed
Volume 201
Issue 7
Pages 889-896
Institution Citation THOMAS, N.A., OLVERA-RAMIREZ, A.M., ABECIA, L., ADAM, C.L., EDWARDS, J.E., COX, G.F., FINDLAY, P.A., DESTABLES, E., WOOD, T.A. and MCEWAN, N.R. 2019. Characterisation of the effect of day length, and associated differences in dietary intake, on the gut microbiota of Soay sheep. Archives of microbiology [online], 201(7), pages 889-896. Available from: https://doi.org/10.1007/s00203-019-01652-w
DOI https://doi.org/10.1007/s00203-019-01652-w
Keywords Soay sheep; Digestive tract; Bacteria; Anaerobic fungi; Ciliated protozoa; Day length

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