Abstract
This study carried out to evaluate of substitution of soybean meal by raw common vetch seed Vicia sativa L. . A total of 96 common carp Cyprinus carpio L. with average weight 32 ± 2 gm / fish . had distributed randomly over forth experimental diets with three replication for each diet . which contain different rates of raw common vetch ; Zero % (Control diet . diet 1) and three diet contained 15%. 30 % and 45 % of a total diet (2 . 3 and 4) respectively instead of 26 % . 55 % and 80 % of soybean meal . Statistical analysis of results showed a significant differences (P > 0.05) in weight gain . growth rate . relative growth rate . specific growth rate . food conversion ratio . protein efficiency ratio (PER) and protein productive value (PPV) between control diet and fish were fed at diet 3 and 4 . whereas there were no significant differences were recorded among fish were fed at diet 2 for above criteria except that for protein efficiency ratio . It will be concluded that possibility of replacing 26 % of soybean meal by common raw vetch (15 % of total diet) without impacting on studied characteristics with concerning growth and food utilization .
