Crude glycerine mixture in diets of broiler chickens (1 to 42 days)

Abstract

Two experiments were conducted to evaluate the effect of inclusion of different levels of crude glycerine mixture in the broilers feeding on performance, carcass yield and carcass composition. 960 broilers were used at 21 days of age distributed in a completely randomized design with six levels of crude glycerine mixture (0; 2; 4; 6; 8 and 10%) and five replicates with 32 birds each. In the Experiment 1, for the growth period (22 to 42 days), was a linear effect in the levels of crude glycerine mixture inclusion on feed intake and a quadratic effect for weight gain, average weight and litter dry matter at 42 days old. There was no effect on broiler chicken carcass yield. In the Experiment 2, in the initial period (1 to 21 days), there was an increasing linear effect for feed intake and feed conversion. The same behavior was observed only for feed conversion in the period of 1 to 42 days. For chemical composition analysis of birds were not observed effects for all variables. The litter moisture at 21 and 42 days increased linearly. The utilization of crude glycerine mixture, byproduct of biodiesel production in feed formulation for broilers is possible, however should be better evaluated, for all the nutrients of its composition that could come into the diet balance, making possible to the broilers to have a nice performance.