Genetic variation of abdominal fat, body weight, and carcass weight in a female broiler line.

Pedigreed matings in a commercial purebred female broiler selection line produced 311 males and 341 females, which were slaughtered at 50 days of age. Coefficients of variation of abdominal fat weights were higher than live and carcass weights. The coefficient of variation was reduced when abdominal fat was regressed on live weight or when percentage of live or carcass weight was used.

Abdominal and carcass fat in five broiler strains.

Ten males and 10 females from each of five commercial broiler strains were weighed and slaughtered at 55 days of age. Over all, mean live body weight was 2112 g for males and 1702 g for females and abdominal fat was 2.9% (males) and 3.