Influência do peso vivo, da idade e do sexo sobre características de carcaças de equinos

Abstract

With the objective of evaluating the quantitative characteristics of carcasses of equines, 72 undefined breed equines were classified by body weight, age and sex. It was determined cold carcass weight, cooling loss, carcass yield, front and back weight and muscle/bone ratio. The statistical model used was a completely randomized design in a 2 × 3 × 3 factorial scheme, with the two sexes, three age ranges and three ranges of body weights. The highest weight range corresponded to the highest carcass weight with average of 201.71 kg, and the highest muscle/bone ratio with 77.69%. The lowest cooling loss was observed in the lowest weight range, with 2.03%. The average for carcass yield was of 51.20%, for front and back, 54.86% and 45.06%, respectively. There was an interaction between sex and age of the animals for carcass yield variable, which was higher in young male equines (until 8 years of age) than in older animals and females. Therefore, it is suggest priorization of young and heavier animals for equine slaughter because they present higher amount of exportation-type meat.