Chemical composition and energy value of food of animal origin used in diets for Japanese quails

It was evaluated the chemical composition and energy values of slaughterhouse by-product meal for male Japanese quails (Coturnix coturnix japonica). It was used 320 male quails at 32 days of age, distributed in a complete random experimental design, with five diets (one reference diet and four test diets), each one evaluated with eight replicates with eight birds per experimental unity. Meals replaced 25% of the reference diet and their metabolizable energy values as well as their metabolizability coefficients were determined by using the total excreta method collection. Values of apparent metabolizable energy (kcal/kg) and apparent energy corrected for nitrogen balance (kcal/kg) are, respectively, 2,152 and 2,142 for meat and bone meal; 3,139 and 3,137 for feather meal; 2,658 and 2,651 for fish meal and 3,692 and 3,668 for poultry viscera meal. Metabolizability coefficients are 60.51% for meat and bone meal; 59.25% for feather meal; 64.09% for fish meal and 78.64% for poultry viscera meal.