Adela Marcu

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THE INFLUENCE OF GENOTYPE AND SEX ON CARCASS CHARACTERISTICS AT BROILER CHICKENS

Adela Marcu, I. Vacaru-Opriş, A. Marcu, Lucia Dănăilă, D. Dronca, B. Kelciov

Abstract
In this experiences was studied the influence of genotype and sex on carcass characteristics (slaughter yield, participation percentage of the cut parts from the whole carcasses structure, the meat:bone ratio from carcass and from major parts of the carcass) at broiler chickens reared in identical conditions and slaughtered at 42 days old. The genetic material was represented of broiler chickens that belonged hybrids: "Ross-308" (control batch-Lc) and "Lohmann Meat" (experimental batch-Lexp). After slaughter, from each group were sampled 30 carcasses (15 per sex), was determined slaughter yield and participation percentage of the cut parts from the whole carcasses structure using gravimetric measurements. The meat:bone ratio was determined on 10 carcases from each batch (five per sex) that were manually deboned. For analysis of variance was used Mann Whitney test. The results of this experiment showed that sex influenced the slaughter yield (P≤0.05), participation percentage of the wings (P≤0.001, at Lc and P≤0.01, at Lexp) and thighs (P≤0.001) and meat:bone ratio from thighs (P≤0.05), at Lexp; while the genotype influenced slaughter yield (P≤0.001), participation percentage from the breast (P≤0.001) and thighs (P≤0.01), meat:bone ratio from breast (P≤0.001) and legs (P≤0.05).

Key words: broiler chicken, carcass, meat:bones ratio, slaughter yield