The objective of this trial was to evaluate carcass traits of 56 bulls from three genetics groups averaging 18 months of age and receiving two feeding levels. Twelve bulls were slaughtered in the beginning of the study and used as reference animals. The remaining 16 genetically improved Nellore, 12 ordinary Nellore, and 16 genetically improved Caracu averaging 404, 345, and 434 kg of initial body weight, respectively, were randomly assigned to a completely randomized designed with a 2 x 3 […]

This work was conducted with the aim to evaluate the influence of weaning age at 100 (EW) or 180 (CW) days old on the growth of Braford heifers until approximately 18 months old. The calves of EW were daily supplemented during 63 days, at quantity of 1% of their live weight, with a comercial ration with 18% of crude protein and 74% of total digestible nutrients. Average daily gain from birth to 205 days (G205), from this one until 365 […]

Seventeen Nelore heifers were submitted to a superovulation protocol, beginning on the ninth day of the estrous cycle. Eight heifers were superovulated with 250 IU (T1) and nine with 500 IU (T2) of FSH. The animals were monitored by ultrasonography during the superovulation period and on the embryo collection day. There were no differences on the recovery rate and quality of the structures collected among the animals of the two treatments. Animals treated with 250 (T1) and 500 IU (T2) […]