Suplementação concentrada de caprinos F1 (Boer x SRD) em caatinga enriquecida com capim corrente (Urochloa trichopus Stapf).

Abstract

This study aimed to evaluate the characteristics, regional and tissue composition of F1 goat carcass (Boer x SPRD) finished in thinned grasslands of subjected to concentrate supplementation. Twenty-four F1 crossbred goats (Boer x SRD) with body weight (BW) average 26,92kg were used in this study. The supplement was prepared in order to meet the requirements for the animals of treatment with 1.5% supplementation had a gain of 150g. For data analysis it was adopted a completely randomized design with four treatments (supplementation levels of 0.0%, 0.5%, 1.0% and 1.5%) and six repetitions (animals). The data were submitted to variance and regression analysis. The supplementation provided a linear increase for most of the weight items and yields of carcass quality parameters. For the results of subjective evaluations only conformation was influenced by supplementation. The morphometric measurements can be observed in a positive linear effect of supplementation to the perimeter of the chest (PT), hind perimeter (PG), width of rear (LG), width of the chest (LT). The level of supplementation showed a linear positive effect on the weight of most non-edible parts of the carcass and for the performance was not observed influencing supplementation for most items. It was observed that there was a positive linear effect of supplementation levels (P <0.05) for most commercial retail cuts except for the weight neck(P> 0.05). However, the income of the cuts did not influenced by the supplementation levels. For each tissue weight (muscle, bone, total fat, subcutaneous fat and intramuscular fat) in cuts, the effect of supplementation was very variedwhat also happened with the income. On the other hand, muscleincome was not influenced by the supplementation (P> 0.05) in any cutting studied. The relationship of M:O and M:G did not show the same results in all commercial cuts. For M:O relationships there was no positive linear effect of supplementation (P>0,05) for the neck and shoulder cuts. As for the relationship M:G hears linear effect and negative for the sidecut and the palette.