Vaccenic acid and cis-9 -11 CLA in the rumen and different tissues of pasture- and concentrate-feed beef cattle

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dc.contributor.author Shen, S.
dc.contributor.author Nuernberg, Gerd
dc.contributor.author Ender, Klaus
dc.contributor.author Nuernberg, Karin
dc.contributor.author Dannenberger, Dirk
dc.contributor.author Zhao, R.
dc.contributor.author Scollan, Nigel D.
dc.date.accessioned 2009-07-09T09:11:53Z
dc.date.available 2009-07-09T09:11:53Z
dc.date.issued 2009-07-09
dc.identifier.citation Shen , S , Nuernberg , G , Ender , K , Nuernberg , K , Dannenberger , D , Zhao , R & Scollan , N D 2009 , ' Vaccenic acid and cis-9 -11 CLA in the rumen and different tissues of pasture- and concentrate-feed beef cattle ' Lipids , pp. 1093-1103 . en
dc.identifier.other PURE: 117098
dc.identifier.other dspace: 2160/2595
dc.identifier.uri http://hdl.handle.net/2160/2595
dc.description Shen, S., Nuernberg, K., Nuernberg, G., Zhao, R., Scollan, N. D., Ender, K., Dannenberger, D. (2007). Vaccenic acid and cis-9 -11 CLA in the rumen and different tissues of pasture- and concentrate-feed beef cattle. Lipids, 42, (12), 1093-1103. en
dc.description.abstract The objective of present study was the comparison of trans-11 18:1 (VA) and cis-9,trans-11 CLA concentrations in the rumen and different tissues in beef cattle, and to examine the diet and breed effects on the compound concentration and deposition. Sixty-four German Holstein and German Simmental bulls were randomly assigned to two dietary treatments, based on concentrate or pasture. The concentration of cis-9,trans-11 CLA and VA in rumen, duodenal digesta and different tissues was determined by gas chromatography. The results showed that pasture relative to concentrate feeding significantly increased the concentration of VA in duodenal digesta, plasma and erythrocyte phospholipids. Pasture-based feeding resulted in a significant enrichment of cis-9,trans-11 CLA in plasma lipids and erythrocyte phospholipids, but not in rumen and duodenal digesta, compared to concentrate-fed diet. Diet did not affect the cis-9,trans-11 CLA concentrations (mg/100 g fresh tissue) in semitendinosus muscle and subcutaneous fat. There was a breed effect on the deposition of cis-9,trans-11 CLA in longissimus muscle with lower concentration in pasture-fed German Simmental bulls compared to concentrate-fed bulls. However, pasture feeding significantly increased both, the VA and cis-9,trans-11 CLA concentrations in liver and heart tissues. Both diet and breed effects on ¿9-desaturase index was observed in muscle and subcutaneous fat tissues. There was a linear relationship between the concentration of VA and cis-9,trans-11 CLA and the coefficients of determination (R 2) varied between 0.29 and 0.87 from rumen to the different tissues. en
dc.format.extent 11 en
dc.language.iso eng
dc.relation.ispartof Lipids en
dc.title Vaccenic acid and cis-9 -11 CLA in the rumen and different tissues of pasture- and concentrate-feed beef cattle en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.contributor.institution Department of Computer Science en
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en


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