Desempenho de bovinos confinados consumi dieta do alto grão.

Abstract

The research was carried out from August 31 to December 15, 2017 using 80 animals with a mean initial weight of 437 kg. The diet used was based on 85% corn grain and a 15% pelletized core. In the first 15 days the animals went through a period of adaptation, which was implemented the high grain diet, and removing the bulky, which was around 2% of the live weight of the animals, being adjusted every two days the new consumption with an average increase of 10% of the previous days. As a result, the animals spent 90 days in confinement on the basis of diet. Every 15 days the animals were weighed, preceded by a solid fast for 12 hours, always in the morning. The values of initial weight (PI), mean weight (PM) and final weight (FP) were determined from the values of the weighings and the mean daily gain (ADG) was calculated. It was verified that the average daily weight gain was 1.20 kg during all experimental period, in which each animal gained on average 125 kg. The use of the high grain diet can be effective as a way to increase the gains, especially in times when the seasonality of the forage can compromise animal performance indexes. The observation of the cost of the food, both the grain and the nucleus, will be determinant in the choice of the high grain diet to reach the objectives in the confinement of beef cattle in an advantageous way.