Desempenho de cordeiros confinados submetidos a dietas contendo óleo de soja, óleo residual de fritura ou óleo de palma.

Abstract

The objective of this study was to evaluate the effects of the inclusion of different lipid sources in the diet of lambs in confinement on performance and apparent digestibility of nutrients. Thirty uncastrated male lambs of the Santa Inês breed, aged approximately five months, average body weight of 29±2kg, were randomly assigned to three treatments: soybean oil, frying soybean oil, palm oil, with ten replicates. Diets formulated roughage ande concentrate were at a 40:60 ratio, consisting of elephantgrass silage (Pennisetum purpureum), ground corn, soybean meal, wheat bran, 4% oil of each treatment, calcitic limestone and urea. The experiment was 42 days of data collection, at the end the animals were slaughtered. Apparent digestibility was estimated using the indigestible neutral detergent fiber internal marker (FDNi). Intalke of dry matter, crude protein, neutral detergent fiber, non - fibrous carbohydrates, average daily weight gain and feed conversion did not show any difference between treatments. It was observed difference, only in the digestibility coefficient of the ethereal extract, between the soybean oil and the palm oil. It is concluded that different lipid sources, even with different fatty acid profiles but with up to 4% inclusion, do not affect the performance of lambs in confinement, and that the frying soybean oil is an alternative source for increasing the energy density of diets for finishing lambs in confinement.