Avaliação in vivo e na carcaça de cordeiros das raças corriedale e texel terminados em confinamento

Abstract

The productive chain of the sheep industry went through a series of changes in the last two decades and has been trying to restore and reshape the conduct of production and productivity of this period. In this search, the feedlot finishing system has proved quite effective as an alternative to reduce seasonality, standardize and enhance the production lots. This system enhances the productivity of the region already adapted genotypes. The objective of this study was to characterize the differences "in vivo" and in the carcass of Corriedale and Texel lambs finished in feedlot. The study was conducted between March and June 2011 in an experimental feedlot located in a private property in the municipality of Dom Pedrito - RS. There were initially collected data "in vivo" (weight load, body condition score, degree of conformation, body length, height and compactness of the previous body) for Corriedale and Texel lambs, aged between 6 and 8 months at the time of loading. The data on housing (hot carcass weight, hot carcass yield, degree of structure, degree of greasing, outer length of carcass, carcass inner length, leg length, rump width, perimeter, and hip girth) were obtained at slaughter in commercial refrigerator. There was significant difference in genotype variables body condition score, body length and compact body of the animal in vivo evaluations. In the evaluations of housing only the degree of fat showed a significant difference. There was no difference between Corriedale and Texel lambs for weight loading, carcass weight and carcass yield. The system of feedlot finishing proved extremely effective in terminating the animals with a high degree of finish. The Corriedale was shown to be efficient for beef production in confinement