Impactos ambientais da pecuária no Estado de Goiás e o desempenho de diferentes grupos genéticos no confinamento de bovinos

Abstract

The objective was to address the environmental impacts of livestock farming in the Cerrado biome and discuss aspects of environmental sustainability considering the intensive livestock also evaluate the performance of different genetic groups in confinement. The survey was conducted from a database of a property located in the states of Goiás and Mato Grosso. The database contained the amount of 25 070 cattle, after it was made a more detailed analysis was taken from the animals they would not participate. It used information from 17,704 animals of three genetic groups (Nellore, Aberdeen Angus and Composite) and all noncastrated males. The animals were fed the same diet during the feeding period, the animals were kept 124 days in confinement. The variables that were analyzed were: Initial weight (PI); Final Weight (FP); Days of confinement (DC), weight gain (GP); and daily weight gain (GDD). Analysis of variance was performed under Generalized Linear Model (GLM). The data were analyzed using the Statistical Analysis System - SAS and the means were compared by Tukey test. The effect was significant (p <0.001) for two analyzed characteristics GP and GPD. It was observed that the genetic groups Aberdeen Angus and Compound were more efficient for GPD however had lower averages for GP. The objective was to evaluate the performance of different genetic groups in the cattle feedlot.