This experiment was carried out to evaluate the digestibility of the amino acids from corn, soybean meal and corn germ meal in cecectomized roosters and broilers. The experiment used sixteen Lohmann-LSL roosters with 45 weeks of age, 20 AgRoss 508 male broilers with 21 days of age and 20 other male broilers of same line, with 42 days of age, all of them cecectomized. A completely randomized arrangement with three animal categories (roosters; chickens at 21 and 42 days of […]

Two experiments were carried out to evaluate the use of two methionine sources (powder or liquid) in diets based on total and digestible amino acids for white and brown growing pullets at starter phase (1 to 6 weeks old) and grower phase (11 to 16 weeks old). In each experiment, 384 birds were distributed to a completely randomized design in a 2 × 2 × 2 factorial arrangement, composed of bird strain (Hy-Line W36 and Hy-Line Brown), source of methionine […]

The inclusion of four lactose levels (0, 7, 14 and 21%) in pre-starter diets for piglets was studied to determine the best level of lactose inclusion in weanling diets at this age. The experimental diets were fed from the weaning day to 14 days post weaning, but the performance was followed until the end of the nursery phase, at 35 days post weaning. The average daily gain (ADG) and the daily intake (CRD) from 0 to 14 days linearly increased […]