Hidrolisados proteicos na alimentação do jundiá (Rhamdia voulezi)

Abstract

Current investigation evaluates the productive performance, carcass characteristics, chemical composition and biochemical parameters of catfish Rhamdia voulezi juveniles reared in cages and fed on diets with different meat hydrolysates. Three hundred and twenty juveniles, average initial weight 35.5 ± 0.3 g, distributed in sixteen 0.3 m3 hapas, were installed in four 4 m3 cages, in a randomized block design with four treatments and four replicates. Treatments included 60g swine liver hydrolysate/kg of diet, 40g tilapia carcass hydrolysate/kg of diet and 60g sardine hydrolysate/kg of diet. All treatments were isoproteic and isocaloric. Data were analyzed by ANOVA and then by Tukey´s test at 5% probability by SAEG statistical program. The inclusion of swine liver and sardine hydrolyzed in the diet improved daily gain in weight and did not affect the levels of cholesterol and triglycerides and the chemical composition of the carcass of fishes. The different tested protein hydrolysates had satisfactory results. Within weight gain, the swine hydrolysate liver followed by sardine hydrolysate showed the best results.