Determinação e predição da composição tecidual da carcaça de diferentes grupos genéticos de caprinos nativos em confinamento no semi-árido.

Abstract

The aim of this study was to evaluate the tissue composition of the carcass of native goats of different genotypes bred in confinement. The sample was composed by 30 goats of Azul, Graúna and Moxotó breeds and with body weight (BW) averaging 15,93 ± 2,4; randomly distributed in a completely randomized design with three replications and 10 genotypes. The experiment lasted 121 days. The animals were slaughtered at 20kg LW. The carcasses were divided in half, with a halfsectioned carcass left in the wholesale cuts: neck, shoulder, rib, loin and leg and they were dissected into muscle, fat and bone. There was no significant effect of genotype on the amount of any tissue component, except that the yield of the fat was higher (P <0,05) genotype Graúna ribs. The muscularity of the leg was not affected (P>0,05) because of the treatments. It was concluded that the common origin and the morphological and functional similarity between the genotypes generated carcass whose cuts showed similar yield tissue, especially in quantitative terms of muscle and fat.