Fatty acid composition of beef steers as affected by diet and fat depot

Simple item page
dc.contributor.authorMapiye, Cletosen_ZA
dc.contributor.authorVahmani, P.en_ZA
dc.contributor.authorAalhus, J. L.en_ZA
dc.contributor.authorRolland, D. C.en_ZA
dc.contributor.authorBaron, V. S.en_ZA
dc.contributor.authorMcAllister, T. A.en_ZA
dc.contributor.authorBlock, H. C.en_ZA
dc.contributor.authorUttaro, B.en_ZA
dc.contributor.authorDugan, M. E. R.en_ZA
dc.date.accessioned2016-08-02T09:56:22Z
dc.date.available2016-08-02T09:56:22Z
dc.date.issued2015-10-09
dc.descriptionCITATION: Mapiye, C. et al. 2015. Fatty acid composition of beef steers as affected by diet and fat depot. South African Journal of Animal Science, 45(4):386-394, doi:10.4314/sajas.v45i4.5.
dc.descriptionThe original publication is available at http://www.sasas.co.za/journals
dc.description.abstractSubcutaneous and perirenal fatty acid (FA) profiles were compared in steers fed a control diet (70 : 30 red clover silage (RC) : barley concentrate), a diet with sunflower seed (SS) substituted for barley, and diets with 15% or 30% wheat dried distillers’ grain with solubles (DDGS-15 and DDGS-30) substituted for RC and SS. Perirenal fat (PRF) versus subcutaneous fat (SCF) had greater proportions of total saturated FA (SFA) and branched chain FA (BCFA), and lower proportions of total and major cis-monounsaturated FA (c-MUFA). Addition of SS to the diet did not change the proportions of total and major c-MUFA and n-6 polyunsaturated FA (PUFA), but led to decreases in the proportions of total and major SFA, BCFA and n-3 PUFA. Progressive substitutions with DDGS led to no further changes in the proportions of total and major SFA and n-3 PUFA, but decreased the proportions of BCFA and c9-16:1, and increased the proportions of c9-18:1 and n-6 PUFA. Feeding SS and DDGS-15 diets yielded the largest proportions of total and major t-18:1 (t11- and t13-/t14-18:1) isomers in PRF and conjugated lineolic acid (CLA) isomers (t7,c9- and t9,c11-18:2) in SCF, but responses were diminished when feeding the DDGS-30 diet. Subcutaneous fat versus PRF from steers fed SS and DGGS diets had larger proportions of non-conjugated 18:2 biohydrogenation products (i.e. atypical dienes) than the control diet. Overall, feeding SS and DDGS-15 diets raised the proportions of t11-18:1 in PRF and c9,t11-18:2 in SCF, which have potential human health benefits, but feeding DDGS-30 was less effective.en_ZA
dc.description.urihttp://www.sasas.co.za/fatty-acid-composition-beef-steers-affected-diet-and-fat-depot
dc.description.versionPublisher's version
dc.format.extent9 pages
dc.identifier.citationMapiye, C. et al. 2015. Fatty acid composition of beef steers as affected by diet and fat depot. South African Journal of Animal Science, 45(4):386-394, doi:10.4314/sajas.v45i4.5.
dc.identifier.issn2221-4062 (online)
dc.identifier.issn0375-1589 (print)
dc.identifier.otherdoi:10.4314/sajas.v45i4.5
dc.identifier.urihttp://hdl.handle.net/10019.1/99299
dc.language.isoen_USen_ZA
dc.publisherSouth African Society for Animal Science
dc.rights.holderAuthors retain copyright
dc.subjectBeefen_ZA
dc.subjectRumenic aciden_ZA
dc.subjectVaccenic aciden_ZA
dc.titleFatty acid composition of beef steers as affected by diet and fat depoten_ZA
dc.typeArticleen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
mapiye_fatty_2015.pdf
Size:
150 KB
Format:
Adobe Portable Document Format
Description:
Download article
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.95 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Research Articles (Animal Sciences)