%0 Journal Article %T The Effect of Divergent Selection for 4-wk Body Weight on Growth Curve Parameters and Carcass Components in Japanese Quail (Coturnix coturnix japonica) %J Iranian Journal of animal Science %I پردیس کشاورزی و منابع طبیعی دانشگاه تهران %Z 2008-4773 %A Beygi, Hamid %A Pakdel, Abbas %A Moradi shahr babak, Mohammad %D 2011 %\ 06/22/2011 %V 42 %N 1 %P 39-45 %! The Effect of Divergent Selection for 4-wk Body Weight on Growth Curve Parameters and Carcass Components in Japanese Quail (Coturnix coturnix japonica) %K . %K carcass components %K divergent selection %K Growth curve %K Japanese quail %R %X This study has been carried out to investigate the effect of short-term divergent selection for 4-wk body weight on growth curve parameters and carcass components in Japanese quail. Quail lines utilized were two divergently selected for high (HW) and low (LW) 4-wk body weight (BW) as well as a line as control (C). The results of the study indicated that quails in HW line had heavier BW than those in LW and in C lines from 6 and 11-d thereafter respectively. Moreover there was a significant difference for growth rate between lines from 4-d of age. To investigate the changes in carcass components, quails were slaughtered at 32 and 42-d of age. Results indicated that quails in HW line had significantly heavier carcass, thigh, heart, lung, liver, small intestine and breast dimensions (length, depth & weight) than quails in LW line for both age groups (P %U https://ijas.ut.ac.ir/article_22715_2723dd1778f6df647d74108502dcdbac.pdf