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The aim of this study was to investigate the effect of conformation of  chickens of different genotype on the yield of breast meat. As a typical  example of the chickens of very poor conformation pure breed Naked neck  chickens were taken, fattened 8 and 10 weeks (groups K8 and K10). As an  example of good conformation, an imported hybrid of chickens was taken, known  for its broiler qualities and as medium growing hybrid, Red Bro (R). The  second experiment included commercial hybrids of fast growth (Ross, Cobb and  Hubbard) reared according to all technological standards of intensive  fattening until the age of 42 days. The results obtained were contrary to the  conclusion obtained a few decades ago, at the beginning of the study the  conformation of chicken, by Scots and Darrow (1953), according to which the  selection of chickens of heavy type, despite the fact that, to some extent,  it had improved meat yield of the breast, did not significantly improve  slaughter traits of fattening chickens, confirming that better conformation  and higher body weight had a positive impact on improving relative share of  breast, i.e. white meat. The results regarding the slaughter traits of  chicken genotypes of different conformation suggest that breeding - selection  work to improve the conformation of broilers significantly improved slaughter  yields and breast meat yield. In this sense, the conformation can be treated  as an indicator of the slaughter value of carcasses, rather than an aesthetic  category. [Projekat Ministarstva nauke Republike Srbije, br. TR-31033]

Carcass quality of chickens of different conformation