TY - JOUR ID - 22715 TI - The Effect of Divergent Selection for 4-wk Body Weight on Growth Curve Parameters and Carcass Components in Japanese Quail (Coturnix coturnix japonica) JO - Iranian Journal of animal Science JA - IJAS LA - en SN - 2008-4773 AU - Beygi, Hamid AU - Pakdel, Abbas AU - Moradi shahr babak, Mohammad AD - Y1 - 2011 PY - 2011 VL - 42 IS - 1 SP - 39 EP - 45 KW - . KW - carcass components KW - divergent selection KW - Growth curve KW - Japanese quail DO - N2 - 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 UR - https://ijas.ut.ac.ir/article_22715.html L1 - https://ijas.ut.ac.ir/article_22715_2723dd1778f6df647d74108502dcdbac.pdf ER -