The experiment was carried out to determine the chemical and the energetic values of eight feedstuffs (corn grain, corn pre-cooked I and II, canola meal, spray-dried plasma, poultry by-product meal, glucose and corn starch) for birds. To determine the apparent metabolizable energy (AME) and nitrogen corrected apparent (AMEn) values, the traditional method of total excreta collection was used, with 400 broiler chicks, male and female, 21 days old. A completely randomized design, with ten treatments (eight feedstuffs and two reference diets), and five replications of eight birds per experimental unit, was used. The corn grain and pre-cooked I and II replaced 40%, and the starch and glucose 20% of the reference diet containing 26% crude protein (CP); the canola meal replaced 40%, and spray-dried plasma and poultry by-products meal 20% of the reference diet containing 18% CP. Dry matter - DM (%), CP (%), AME (kcal/kg) e AMEn (kcal/kg) values were, respectively, for corn grain: 87.72, 7.33, 3,246, and 3,235; for pre-cooked I: 87.75, 7.14, 3,385, and 3,379; for pre-cooked II: 87.88, 7,34, 3.187 and 3.179; for canola meal: 87,53, 37,89, 1,793 and 1,778; for spray-dried plasma: 90,67, 74,24, 3.503 and 3.474; and for poultry by-product meal: 90.35, 64.98, 4,293 and 4,268. For the glucose and corn starch, only the values of DM (%), AME (kcal/kg) and AMEn (kcal/kg) were determined, and for the glucose the values were 99.12, 3,170, and 3,168 and for corn starch, 85.52, 3,203, and 3201, respectively.
total collection; energy values; broiler chicks
