Lipid and selenium sources on fatty acid composition of intramuscular fat and muscle selenium concentration of Nellore steers

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dc.contributor.authorPereira, Angélica Simone Cravo
dc.contributor.authorSantos, Marcos Veiga dos
dc.contributor.authorAferri, Gabriela
dc.contributor.authorCorte, Rosana Ruegger Pereira da Silva
dc.contributor.authorSilva, Saulo da Luz e
dc.contributor.authorFreitas Júnior, José Esler de
dc.contributor.authorLeme, Paulo Roberto
dc.contributor.authorRennó, Francisco Palma
dc.date.accessioned2024-05-14T17:54:22Z
dc.date.available2024-05-14T17:54:22Z
dc.date.issued2012
dc.description.abstractThe objective of this study was to evaluate the effect of lipid and selenium sources in diets for finishing Nellore steers on the fatty acid composition and selenium concentration of the longissimus muscle. Fifty Nellore steers (body weight = 458±39 kg) were assigned to one of six dietary treatments: 1) diet containing sunflower seed and inorganic selenium; 2) sunflower seed and organic selenium; 3) whole cottonseed and inorganic selenium; 4) whole cottonseed and organic selenium; 5) soybeans and inorganic selenium; and 6) soybeans and organic selenium. Diets were formulated with the same amount of nitrogen and calories and supplied once daily to steers in collective pens, with three animals per pen, for 120 d. At the end of the trial, steers were slaughtered and samples of the longissimus muscle were collected for fatty acid and selenium analysis. Effect of selenium sources was detected for selenium concentration in the longissimus muscle. Organic selenium had higher concentrations in the meat compared with inorganic selenium. The total saturated, monounsaturated and polyunsaturated fatty acids did not differ between the sources of lipids and selenium. For selenium sources, no differences were observed between the concentrations of polyunsaturated fat. Also, no differences in C18:2 cis-9 trans-11 concentrations were noted; however, steers fed sunflower seed presented greater proportions of this fatty acid in the meat. The results indicated that the use of sunflower seed, cottonseed or soybeans and organic or inorganic selenium in feedlot diets to Nellore cattle does not alter the great part of the fatty acid profile of the longissimus muscle. However, the inclusion of sunflower seed in the diet increases the meat CLA cis-9, trans-11, which is desirable and beneficial for the health of consumers.
dc.identifier.issn1516-3598
dc.identifier.otherS1516-35982012001100009-scl
dc.identifier.urihttps://repositorio-aptaregional.agricultura.sp.gov.br/handle/123456789/1000
dc.relation.ispartofRevista Brasileira de Zootecnia
dc.subjectantioxidant
dc.subjectcattle
dc.subjectlongissimus
dc.subjectsoybean seed
dc.subjectsunflower seed
dc.subjectwhole cottonseed
dc.titleLipid and selenium sources on fatty acid composition of intramuscular fat and muscle selenium concentration of Nellore steers
dc.typeArtigos
oaire.citation.endPage2363
oaire.citation.issue11
oaire.citation.startPage2357
oaire.citation.volume41

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