author(s)
ST Aljuboory and MS Al-Khshali

abstract
The present study was conducted to identify genotypes of insulin- like growth factor (IGF-I) and its relation with chemical analysis of the body of common carp of common carp Cyprinus carpio in Al-Radhwaniyah Fish reservoir (Baghdad). Genotypes of insulin like growth factor was identified using restriction fragment length polymorphism (RFLP) in specified mutation in the site 3759T > G. Results of statistical analysis on chemical analysis of the body showed significantly effect of moisture and protein (p< 0.05) due to variation of genotypes. Heterozygous genotype (TG) achieved the highest rate of moisture (82.50±0.17%) whereas wild genotype (TT) recorded 79.55±0.17%. TT genotype had achieved the highest protein rate 15.95± 0.80% and also excelled significantly (p< 0.05) compare with GT genotype which reached 9.65±0.60%. Lipid and ash did not affected significantly by any genotypes. The present study conclude that the possibility of credibility upon polymorphism in insulin like growth factor as assign for chemical composition of fish body and select them to be parents for coming generation.