The trial was conducted to evaluate the effects of feeding increasing levels (0, 10, 20 and 30%) of fish residues silage on the chemical composition of this silage with 30% wheat meal and on the performance of tilapia Nile fingerlings. Nile tilapia filleting residues were handle chopped, grounded and heated during 15 minutes at 105°C. After this procedure, it was added 30% wheat meal relative to residue total weight. The material was stored in plastic silos with 20 liters capacity […]

Thirty-six young bulls (12 Nellore, 12 ½ crossbred Holstein x Nellore, and 12 crossbred ½ Caracu x Nellore) were used to evaluate weight gain, feed conversion, ingestion capacity and apparent digestibility of various nutrients. We use growing and finishing animals. The growing animals had initial weight of 205 kg, and the finishing ones, initial weight of 310 kg. The animals were fedlot to reach the weight of 310 to 330 kg for the growing animals and 450 to 480 kg […]

One experiment was carried out using 120 laying Isa Brown chickens fed diets containing sugar-cane yeast, to determinate the methionine+cystine (met+cys) requirements. The birds were 51 weeks old at the beginning of the experiment, with the duration of 84 days, with three periods of 28 days each. A completely randomized block design with five treatments and four replications was used. The treatments consisted of a basal diet supplemented with five levels of DL-methionine in order to obtain diets with 0.45, […]