Desempenho produtivo e avaliação de carcaça de cordeiros confinados recebendo torta de babaçu na dieta.

Abstract

The use of industrial agronomy byproduets eonstitutes an alternative for the produetion of confined sheep, once that the feeding of the animais in this kind of system is one of the largest costs. Among the byproduets with potential to use in the feeding of ruminants, there is the pie of babaçu (Orbignya speciosa), that is derived from the pressing of almond, after oil extraction. In view of availability of this byproduct in northern Brazil, the objective was to evaluate the inclusion of pie of babaçu instead elephant grass silage, on consumption, performance, carcass characteristics, commercial cuts of carcass and components that are not parts of the carcass of lambs in growth, in a confined system. Were used 45 male lambs castrated, without defined breed and with initial body weight of 19.08 + 0.41 kg, distributed in completely randomized design, with five treatments and nine repetitions. The treatments were substitution leveis of silage by pie of babaçu (0%, 12.5%, 25%, 37.5% and 50%). The diets were formulated with 40% roughage and 60% concentrate, to satisfy the requirement gain in average daily weight of 200 g/animal/ day. There were not differences (P>0.05) in the average daily gain (196g/day), dry matter intake (1294g/ ay) and feed conversion (6.61). In relation to cuts, the palette presented increse linear- effect with the inclusion of byproduct (P<0.05), and the loin reduced linearly form (P<0.05), according to the substitution. The weight of the components that are not parts of the carcass was not affected (P>0.05) by replacing roughage, except for the liver, that its weight increased linearly (P<0.05). The pie of babaçu can replaces silage elephant grass, to the levei of 50%, without compromising consumption, performance and carcass characteristics.