Caracteristicas de carcaça e qualidade de carne de ovinos alimentados em casca de mamona em substituição ao feno de tifton

Abstract

The effect of replacement of tifton grass hay by castor bean castor bean (O, 33, 66 and 100%) on carcass characteristics, weights and yields of commercial cuts and carcass morphometry . Twenty - eight uncastrated animals, seven months old and mean initial weight of 19.5 ± 2.45 kg, were distributed in a randomized block design, with four treatments and seven replications, and slaughtered after 70 days of confinement. There was a linear decreasing effect for body weight at slaughter, empty body weight, warm carcass weight, cold carcass weight and Iombo-eye area. The left half-carcass weights and all commercial cuts decreased linearly with the replacement. For the neck yield, there was a quadratic effect, with a minimum of 9.84% when the substitution was 56.9%; The yields of the other cuts were not influenced by substitution. The perimeter of the thorax, the leg and the croup and the compactness index of the carcass decreased linearly with the replacement. The replacement of tifton grass hay by castor bean for sheep decreases body weight at slaughter, hot and cold carcass weights, commercial cut weights and morphometric measurements.