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This study was conducted for a period of 90 days to investigate the effect of using different levels of shrimp meals as a partial substitute for the protein concentrate in the diets of common carp (Cyprinus carpio) on growth performance. Eight glass tanks were used, and 48 fish were randomly distributed, with an average weight of 23.0 ± 0.5 g, for individual, which were divided into four experimental treatments, with two replicates for each treatment (6 fish / replicate). Fish were fed at 4% of body weight on laboratory formulated diets with a diameter of 2 mm, and shrimp meal was used in proportions of 0, 16, 32 and 48% for T1, T2, T3 and T4 treatments, respectively. Results of the study showed that treatment T3 was significantly superior to (P <0.01) in the total weight gain rate, daily growth rate, and the feed conversion rate and efficiency, as it recorded 10.90 g / fish, 0.77 g / day / fish, 3.35 and 29.66% for the above characteristics, respectively. The study concluded that there is a positive role in the use of shrimp meal added to the diet by 32% in increasing the essential and non-essential amino acids and its effect on improving growth parameters, which was reflected in the productive characteristics of common carp.

EFFECT OF SUBSTITUTION OF PROTEIN CONCENTRATE BY SHRIMP MEAL ON SOME GROWTH TRAITS OF COMMON CARP (CYPRINUS CARPIO L.)