Características da carcaça de caprinos submetidos a diferentes tipos de volumoso e formas de administração da dieta.

Abstract

Cutting goat breeding in the Brazilian Northeast is a cattle raising activity of great economic importance to producers in this region, due to the high prices achieved in its commercialization, making Northeastern families an important source of income. The objective of this study was to evaluate the effect of the bulky food type and the complete diet administration on carcass and meat characteristics of crossbred goats. Thirty-two crossbred F1 Boer X SPRD and Savana X SPRD goats were used, with an average of 120 days of age and a mean of 16 kg of live weight. It was used a complete diet, with voluminous ratio: concentrate 30:70, and it could be the diet of the administration form pelleted or pelleted. The experimental design was completely randomized in a 2 x 2 factorial scheme (two types of bulky and two forms of diet administration). After the period of confinement, the animals were slaughtered to obtain carcass weight and yields and their edible and non-edible constituents, morphometry, and the characterization of the regional and tissue composition of the carcass. Carcass weights and yields of goats were not influenced by the type of diet bulk. Goats fed with pelleted feed had higher warm carcass yield. Animals that consumed the pelleted ration had greater liver and heart weight, compared to the lean body. The constituents of the inedible carcass were not influenced by the bulk and diet administration, except for the weight of the diaphragm, higher for goats that consumed pelleted ration. The morphometric measurements of the goats were not influenced by the type of roughage and the way of administration of the diet. The yield of the neck, for the animals that consumed the ration had higher proportion. A significant difference was observed for renal pelvic fat score, with the highest index being for goats fed with pelleted feed. It was concluded that there was no difference in the use of buffel grass hay and manioc hay in the carcass characteristics evaluated and in the regional and tissue composition of the carcass. And the use of the pelleted ration provided the goats with improved carcass yield indexes and the kidneys' pelvic kidney fat score.