SUMMARY

The aim of this investigation was a comparative examination of slaughter yield and broiler conformation depending on the influence of genetic basis and sex. The investigations were carried out on the total of 24 slaughtered chickens of the Ross 308 and Hybro G strains (half of them being of female and half of male sex). By the analysis of data established for the slaughter yield value ("traditionally dressed carcass" and"ready to cook" and "oven ready carcass"), it was concluded that the investigated chickens showed similar results, i. e. that the emerged differences were not significant either from the point of view of the sex influence, or as regards the investigated hybrids influence. Statistically significant difference regarding relative metatarsus length value was determined between Ross 308 female and Hybro G male broilers. Furthermore, female Ross 308 chickens had a significantly greater pelvis length than the male Hybro G broilers. The Hybro G males had a significantly greater relative breast depth than both male and female Ross 308 broilers. Additionally, male Hybro G chickens, compared to the female ones of the same strain, had also a significantly greater relative breast depth.

          Key words: broilers, slaughter yield, carcass conformation.