Inclusão da torta de dendê (Elaeis guineensis, Jacq) na alimentação de ovinos confinados.

Abstract

BraziTs effective sheep flock has grown significantly in recent years. Even the efetivo national herd has increased in recent years, the productive chain of sheep breeding has deficiency in the supply of lamb, because the number of animais slaughtered annually is not enough regularity to allow the meat supply. Thus, aiming to reverse this situation, you should evaluate strategies to improve animal production system. Mainly focused on nutrition, being responsible for the production of animal performance and for being one of the factors that burdens the cost in production. In this sense, the objective of this study was to evaluate the effect of inclusion of palm cake at different leveis in the concentrate on intake, digestibility and performance of sheep feedlot. We used 45 crossed lambs Santa Ines, castrated male, 23 ± 0.35 kg initial weight, distributed in a completely randomized experimental design with five treatments 0; 7.5, 15; 22.5 and 30% inclusion of palm kernel cake in the concentrate and nine replicates per treatment. Diets were formulated in relation 50% forage and 50% concentrate, silage using elephant grass as forage source and soybean meai, com meai, palm kemel cake, urea, minerais and limestone to make the concentrate. The experimental period consisted of 88 days, 20 days of adaptation of animais to the facilities and diets and the rest for data collection. We performed regression analysis of variables due to the inclusion of palm kernel cake in the experimental diets. Linear and quadratic models, the model significance (P <0.05) the specificity and biological variables studied were tested. The inclusion of palm cake in the diet decreases linearly (P <0.05) on dry matter intake, with well for most nutrients. The ether extract digestibility showed a linear increase (P <0.05), whereas the non-fiber carbohydrate digestibility showed decreasing linear effect (P <0.05). The final weight and average daily gain negative linear effect (P <0.05). The inclusion of palm kemel cake in the concentrate decreases the consumption of most nutrients, except the ether extract and the insoluble neutral detergent fiber, and thus compromises the animal performance. The digestibility of nutrients with the inclusion of palm kernel cake does not allow the inference of the appropriate levei of inclusion to promote animal performance.