The experiment was conducted to determine the energy values of 12 feeds for Japanese quails. Two hundred and eighty quails averaging 19 weeks old were submitted to the method of total feces collection as a randomized block design, with ten quails per experimental unit. The experimental period lasted 32 days, divided into four trials of eight days each, where two groups of feeds were studied (protein and energetic), with five replicates each: protein of animal origin (meat and bone meal, fish meal and feather and viscera meal) and plant (soybean meals 1 and 2), as well as energetic feeds of plant origin (millet, sorghum and whole rice bran) and oil and fats (refined soybean oil, poultry fat, beef tallow and swine fat). The feeds replaced the reference diet (corn, soybean meal-based diet), as-fed, in 20% (protein of animal origin), 30% (protein of plant origin), 40% (energetic of plant origin) and 10% (oil and fats). The values of apparent metabolizable energy (AME), true (TME), AME and TME corrected by nitrogen balance (AMEn and TMEn), as well as the metabolization coefficients of gross energy (MGEC) were the analyzed variables. The protein sources, with the exception of feather and viscera meal, had values of AMEn higher than those of the Brazilian tables for poultry and swine, meat and bone meal showed the greatest MGEC (74.06%), while feather and viscera meal, the lowest (56.24%). The energetic feeds, with exception of sorghum, showed higher values of AMEn than those cited by the Brazilian tables for poultry and swine, and both refined soybean oil and swine fat had the highest MGEC (95.81% and 93.32%, respectively), while whole rice bran, the lowest (61.13%).
energetic feeds; oil and fats; protein feeds
