?cidos graxos na carne de bovinos Nelore e F1 Sindi Nelore

• Autor(a) principal: Ramalho, Renata de Oliveira Santos
• Data de Publicação: 2009
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRRJ
• Texto Completo: https://tede.ufrrj.br/jspui/handle/tede/586
• topic: ?cido graxo; bovino; qualidade da carne; bovine; fatty acid; meat quality; Zootecnia

The objective of the present study was to compare the fatty acids (FA) profile in Longissimus dorsi (LDM) muscle of bovine Nelore and F1 Sindi Nelore. A completely randomized experimental design in 2 x 2 factorial arrangements (two genetic groups and two ages - 36 and 48 months) was used. Sixteen young bulls (eight Nelore and eight F1 Sindhi Nellore), castrated were used. Animals were fed the same diet and were slaughtered at average live weight of 460.0 (10.1) kg. The FA profile was determined by gas chromatography with high resolution, within a universe of 14 FA, and monounsaturated fatty acids (MFA), polyunsaturated fatty acids (PUFAs), total saturated fatty acids (SFA) and total unsaturated fatty acids (UFA). The animals F1 Sindi Nelore presented smaller concentration of the fatty acid saturated mirystic (0.88%), in comparison with the Nelore (1.31%). There was not interaction (P>0.05) among genetic group and age for studied SFA. The palmitic acid presented larger concentration among SFA. Among the monounsaturated there was significant difference (P <0.05) among the genetic groups for the palmitoleic acid, that had 0.63 percentage points the more for the animals Nelore. The oleic acid presented larger concentration in the meat of the two genetic groups, with 41.44% for the Nelore and 41.38% for F1 Sindi Nelore, followed by the linoleic acid , with 6.15% for the Nelore and 4.86% for F1 Sindi Nelore. There was not statistical difference (P>0.05) for monounsaturated total or for the unsaturated total among the genetic groups. There was no interaction (P>0.05) among genetic group and age for the monounsaturated and polyunsaturated. There was difference (P <0.05) for the ration ?6: ?3. F1 Sindi Nelore obtained smaller ration ?6: ?3. the smallest concentration of acid mirystic and the smallest ration ?6: ?3 in the meat of bovine F1 Sindi Nelore checks makes the meat of this breed healthier considering the fatty acids profile.