Abstract
The aim of this study was to investigate the association of Melanocortin (MC4R) and Myostatin (MSTN) with the carcass quality of V-line and Alexandria line rabbits. MC4R and MSTN were screened by single-strand conformational polymorphism analysis (SSCP) then DNA was sequenced. The results identified four novel SNPs using the four studied primers of the MC4R and MSTN genes. The genotype (BB) has significant higher body weight (BW), carcass weight (CW) and dressing percentage (DP) than AA rabbits. There were no significant differences within the two lines in the carcass color (light pink) and carcass fat (CF). GLM analysis for the effect of genotypes on carcass traits demonstrated that the genotype (BB) was significantly associated with high carcass weight (CW) and dressing percentage (DP). The detected mutations and the analysis of carcass quality means revealed a significant association between MSTN and MC4R polymorphisms with some carcass traits that affect meat quality of rabbits.
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