Efeito do ácido linoléico conjugado na dieta de matrizes de corte e sua progênie

Abstract

The conjugated linoleic acid (CLA) has countless biological properties from which we can highlight the capacity to alter the lipid and immunologic system. Thus, the aim of this work was to evaluate the effects of CLA supplementation in the diet of AgRoss 308 broiler breeder hens over these birds productive and reproductive performance and the possible impacts over the progeny development. The breeder received, from the 44rd to 51st weeks of age, the treatments which were made of diet without CLA (control) or having 0,18%, 0,36% and 0,54% of CLA isomer mixture. These CLA levels in the diets did not reduce the breeders’ weight gain. The breeders’ laying and food conversion wasn’t affected by the treatments, however the weight gain of the eggs and its components which usually occurs due to birds aging was minimized by CLA supplementation. The supply of increasing levels of CLA to the breeders caused embryonic death growth, mainly in early stages of embryogenesis. There was a linear reduction in the progeny hatching rates and the CLA supplied to the breeders affected the progeny performance in the first days of life.