Effects of mass selection based on phenotype and early feed restriction on the performance and carcass characteristics in Japanese quails [Japon bi{dotless}ldi{dotless}rci{dotless}nlari{dotless}nda kitle seleksiyonunun ve erken dönem yem ki{dotless}si{dotless}tlamasi{dotless}ni{dotless}n performans ve karkas özelliklerine etkileri]

This study included japanese quail flock subjected to mass selection for four generations to increase live-weight and a control flock that randomly mated for four generations. the effects of selection and early feed restriction on live-weight,feed consumption,feed conversion and carcass traits were investigated. in terms of live-weight,higher mean values were observed for quail flock subjected to selection in all weeks. it was detected that feed restriction has no effect on weekly live-weight and feed consumption. in addition,restrictedly fed quails more effectively benefitted from feeds in the 3rd and 4th weeks. carcass,edible inner organ,and abdominal fat weight of quails subjected to selection were found as 137.51,8.94,and 1.17 g,respectively. the same traits were determined for quails in control group as 116.08,7.89,and 1.08 g,respectively. it was concluded that feed restriction by producers for species like quails of which the sexual maturity age and cutting age were close to each other would not yield any economic gain,and short-term mass selection could increase carcass weight by around 20%.