The experiment was conducted to evaluate the feedlot performance, from 210 to 408 days of age of calves weaned at 72 (T72) or 210 (T210) days. Thirty-six non castrated Braford (5/8 Hereford 3/8 Nellore) calves were used. The average weight at the beginning of the experiment was 209 (T72) and 192 kg (T210). The whole feedlot period was 168 days, divided in four periods of 42 days. The roughage:concentrate ratio was 60:40 for the first and second periods, 50:50 for […]

The experiment evaluated the performance of Charolais (C) and Nellore (N) cows of three age classes, young (3 and 4 years), adult (5 to 7 years) and old (8 or more years), weaned at three (early weaning) or seven months in the fall (traditional weaning). The weight of the cows at the fall was 45 kg higher for the cows weaned at three months (T3) than for the cows weaned at seven months (T7). The body condition at seven months […]

The objective of this work was to evaluate the average daily dry matter intake (DMI), DMI per 100 kg of live weight (DMIP), DMI per unit of metabolic weight (DMIM), feed: gain (FG) and average daily weight gain (ADG) of beef calves fed with different levels of crude protein in the diet. Forty-seven Braford intact male calves, 66 days old and 76.4 kg of live weight were used. Animals were full fed with oat silage and concentrate (50/50), with 13; […]

The objective of this experiment was to evaluate the performance up to 24 months of age of males from two breeding systems, straightbred (Charolais – C and Nellore – N) and crossbred (1/2 CN, 1/2 NC), submitted to two ages of weaning: T3-weaning at three months of age; T7-weaning at 7 months of age. The calves were maintained from birth to the weaning time with the cows on native pasture and, after weaning, both animals from T3 and T7 were […]