Major carcass parts of broiler chicken from different genotype, sex, age and nutrition system
2009
Nikolova, N., University Ss. Ciril and Methodius, Skopje (The Former Yugoslav Republic of Macedonia). Institute of Animal Science | Pavlovski, Z., Institute for Animal Husbandry, Belgrade - Zemun (Serbia)
The aim of this paper was to examine the influence of sex, age and nutrition system on mass and yield of major parts in broiler chicken carcass from different genotypes. Research material was one-day chicken of Hubbard Classic and Cobb 500 genotypes fattened 49 days under production conditions. The chickens used two nutrition systems. The first nutrition system had higher level of energy and E:P ratio, while the second had higher level of proteins and lower values of E:P ratio in all phase of nutrition. Chicken were separated by sex. The computer program STATISTICA 6 statistically processed all dates. Differences in mass and yield of breast, thighs and drumstick were statistically significant at chickens with different age. The chickens at 49th day of age had significantly higher mass of major carcass parts than the chicks at 42nd and 35th day of age. Genotype had influence only on yield of breast, namely chickens of Cobb 500 genotype had significant bigger yield of breast then chickens of Hubbard genotype. The male chickens had statistically significant bigger main parts mass of carcass and bigger thighs yield then female chickens. The nutrition system basically had not effect on major edible parts of carcass, except on thighs yield, which were significantly bigger at chickens that have used mixtures with higher level of proteins and lower values of E:P ratio.
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