Abstract

This study was conducted under laboratory conditions to evaluate the effect of sesame seed (Sesamum indicum) cake (SSC) as a protein source by a partial replacement of soybean (Glycine max) meal (SBM) on diet stability and growth performance and some productive traits (final weight, total weight gain, specific growth rate, relative growth rate, feed conversion rates and condition factor) of common carp (C. carpio). The experiment consisted of ten treatments with two replications for each treatment, where SSC was used instead of SBM in three types of treatments: row, soaked and phytase enzyme addition in T1, T2 and T3 with three different substitution ratios 10%,20% and 30% in D1, D2 and D3 and treatment without SSC (control group) in T0D0 . The results showed that the diet stability was unaffected by inclusion different levels of SSC, while results of growth performance showed that the replacement of 30% SSC instead of SBM with the addition of phytase enzyme improved significantly (p≤0.05) all growth parameters and some productive traits (final weight, total weight gain, specific growth rate, relative growth rate, feed conversion rates and condition factor), In addition, the results showed that the use of sesame seed cake in raw or soaked form does not negatively affect the growth parameters of the fish. Therefore, sesame seed cake can be used as a cheap source of protein in common carps C. carpio diets.