INTERFERÊNCIA DE TOUROS NO PESO A DESMAMA EM BEZERROS NELORE

Abstract

Compare the weight at weaning of calves from the mating of the Javari and Tornado bulls, of the Nelore breed with sows, also of the Nelore breed. The animals were raised exclusively on pasture, receiving only mineral supplementation. The cows were Nellore cows with an average age of 8 years, with an average body weight of 215 kg. The animals were weighed when they reached 240 days of age, using a mechanical scale, with a maximum capacity of up to 1500 kg. Forty observations were obtained, 20 from the tornado bull and 20 from the Javari bull. The average weight of the heifers, daughters of the Tornado bull, was 184.54 kg, while that of the calves was 209.71 kg. For the calves daughters of the Javari bull the average weight obtained was 183.81 kg and for the calves it was 207.75 kg. There was no difference between the bulls for the weaned animals, however, there was a difference in the weight at weaning, between the sexes, where the males obtained higher values.