Growth and slaughtering performance, carcase fleshiness and meat quality according to the plumage colour in Padovana male chickens slaughtered at 18 weeks of age

摘要

The aim of this trial was to investigate on the growth and meat quality of Padovana male chickens with different plumage varieties, chamois (PC - light brown feathers with white edge), silver(PS - white feathers with black edge), and their cross. The body weight of PC during the growthperiod was higher (p .01) than PS, and it was 1.7 and 1.5 kg, respectively, at 126 d of age. Atslaughter, PC showed higher weight of carcase (p .05), breast and total fleshiness (breast,wings and legs) (p .01), and thigh meat:bone ratio (p .05). PS showed higher shanks weighton carcase weight (p .01), Ilio tibialis a value (p .01), water losses (p .01) and shear force(p .05) in breast meat than PC. Crossing PC males to PS females gave birds with white (CrossW) and silver (Cross-S) plumage (3:1 ratio, respectively). The offspring genotypes showed similarbody weight, and almost all slaughtering, carcase and meat quality traits studied. Cross-W andCross-S showed significantly higher final body weight, breast and leg weight, total fleshinessand thigh meat:bone ratio than PS. For the Padovana breed, the plumage colour can involveproductive and slaughtering performance, and carcase and meat quality, throughout the growing period. At 18 weeks of age, the Padovana male chickens show body weight and carcasefleshiness similar to that of a hybrid laying hen belonging to a light strain.