Utilização do composto exaurido de Pleurotus sajor caju em rações de frangos de corte e seus efeitos no desempenho dessas aves

Abstract

This research evaluated the effect of the addition of a spent mushroom substrate (SMS) Pleurotus sajor caju at different levels on the performance of broiler chicks from 1 to 21, 22 to 38 and 1 to 38 days of age. Five hundred one-day-old Ross-308 chicks were utilized, allocated in a completely randomized design, with five treatments obtained by increased levels of compost on ration (0; 0.5; 1.0; 1.5 and 2.0%), with four replicates of 20 birds per experimental unit. The intake, weight gain, feed conversion, carcass yield, abdominal fat and villus height were evaluated. No effect was observed on intake and feed conversion when the compost was included in the feeding. A positive effect was observed for weight gain from 1 to 21 days of age, with maximum value of 0.67% of SMS, but its addition did not modify the carcass yield and abdominal fat, but modified the villus height. The inclusion of the spent substrate of Pleurotus sajor caju mushroom up to 0.67% improves the weight gain of broiler chicks in the first 21 days of age.