Effect of the food supplemented probioenzyme on growth, hematology and immune responses in rainbow trout (Oncorhynchus mykiss)

To investigate the effect of probioenzyme on growth, nutrition, hematology and immune response in rainbow trout (Oncorhynchus mykiss),this matter was supplemented at 0.3, and 0.5g/kg diet(treatments of 2 and 3 respectively) and control group(treatment 1: no food supplemented probioenzyme) in three treatments with three replications. This survey was performed in nine 200ltanks containing 30  fish(average weight: 26.3± 2.7g) in each tank for 60 days. At the end of the feeding period, the growth and blood factors analyzed. Based on the results, there is no significant difference between treatments 1, 2 and in growth, nutrition and blood erythrocytes factors(P >0.05). The mean white blood cells and blood cells neutrophil percentage in treatment of 3 was significantly different (P <0.05) from the control group fish. Significant differences in serum complement components in the treated groups were in comparission to control group (P <0.05). ACH50 activity and immunoglobulin (IgM) did not show significant differences between treatments (P> 0.05). The lysozyme and serum globulins in treatment 3 compared to the control treatment was higher and statistically significant (P <0.05). Although there weren,t signs of significant effects of probioenzyme on growth and nutrition factors, Probioenzyme can have immunological effects on rainbow trout.