Rumen fermentation and epithelial gene expression responses to diet ingredients designed to differ in ruminally degradable protein and fiber supplies

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dc.contributor.authorGleason, Claire B.en
dc.contributor.authorBeckett, L. M.en
dc.contributor.authorWhite, Robin R.en
dc.date.accessioned2022-07-25T13:30:05Zen
dc.date.available2022-07-25T13:30:05Zen
dc.date.issued2022-02-21en
dc.description.abstractAlthough numerous studies exist relating ruminal volatile fatty acid (VFA) concentrations to diet composition and animal performance, minimal information is available describing how VFA dynamics respond to diets within the context of the whole rumen environment. The objective of this study was to characterize how protein and fiber sources affect dry matter intake, rumen pH, fluid dynamics, fermentation parameters, and epithelial gene expression. Four diet treatments (soybean meal or heat-treated soybean meal and beet pulp or timothy hay) were delivered to 10 wethers. The soybean meals served as crude protein (CP) sources while the beet pulp and timothy hay represented neutral detergent fiber (NDF) sources. Feed intake, rumen pH, fluid pool size, and fluid passage rate were unaffected by treatment. Butyrate synthesis and absorption were greater on the beet pulp treatment whereas synthesis and absorption of other VFA remained unchanged. Both CP and NDF treatment effects were associated with numerous VFA interconversions. Expression levels of rumen epithelial genes were not altered by diet treatment. These results indicate that rumen VFA dynamics are altered by changes in dietary sources of nutrients but that intake, rumen environmental parameters, and the rumen epithelium may be less responsive to such changes.en
dc.description.notesThe present study was supported by funding from the U.S. Department of Agriculture-National Institute of Food and Agriculture (2017-05943).en
dc.description.sponsorshipU.S. Department of Agriculture-National Institute of Food and Agriculture [2017-05943]en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1038/s41598-022-06890-5en
dc.identifier.issn2045-2322en
dc.identifier.issue1en
dc.identifier.other2933en
dc.identifier.pmid35190602en
dc.identifier.urihttp://hdl.handle.net/10919/111351en
dc.identifier.volume12en
dc.language.isoenen
dc.publisherNature Portfolioen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectsugar-beet pulpen
dc.subjectneutral detergent fiberen
dc.subjectdairy-cowsen
dc.subjectchewing activityen
dc.subjectfluid passageen
dc.subjectfatty-acidsen
dc.subjectsheepen
dc.subjectphen
dc.subjectstarchen
dc.subjectratesen
dc.titleRumen fermentation and epithelial gene expression responses to diet ingredients designed to differ in ruminally degradable protein and fiber suppliesen
dc.title.serialScientific Reportsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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