Caracterización comparativa a la faena de cinco híbridos experimentales de pollo campero con diferente genotipo materno

Abstract

The proportion of breast, thigh and abdominal fat and carcase yield at slaughter were evaluated in males from five experimental genetic groups of free range chickens derived from crossing roosters of the paternal synthetic population AH‘, selected for growth rate and feed efficiency, with hens from five maternal synthetic populations. Contemporary males belonging to the traditional version of Campero INTA birds were used as control. Birds of the five experimental crosses exhibited average values regarding breast weight and also in their yield at slaughter, both compatible with commercial production, although the proportion of abdominal fat was greater than that recorded in the reference group and also greater than values normally reported in the literature. In terms of these traits registered in the progeny resulting from the above mentioned crossing, the five maternal synthetic populations may be considered equivalent, as a clear discrimination among them was difficult to carry on.