Effect of different levels of dietary beet molasses on some mucosal immunity parameters and serum biochemical parameters of common carp (Cyprinus carpi

In this study, the effects of different levels of beet molasses on some mucosal immune factors, biochemical parameters of blood in common carp were investigated. The experiment consisted of 360 pieces of common carp with an average weight of 22 ± 2.5. The fish in 12 reservoirs were randomly distributed to 30 units per reservoir. After one week of adaptation, it was fed for a period of 8 weeks. The experiment was carried out in the form of 4 treatments and each treatment with 3 replications including: Molasses (treatment 1), diet containing 0.5% molasses (treatment 2), diet containing 1% molasses (treatment 3) and diet containing 2% molasses (treatment 4) And fish were fed daily with 3% body weight and twice daily with experimental diets. Food from the control group, the commercial food of the common carp of the corporation was no molasses. The results showed that the amount of mucus solution was significantly increased after feeding with molasses (P <0.05). The highest amount of mucus-soluble protein was in the treatment of 2% molasses. The amount of immunoglobulin in treatments and control group did not change significantly. Also, the amount of alkaline phosphatase mucus in treatments was significantly increased in treatment of 1% molasses (P <0.05). The amount of soluble protein and alkaline phosphatase activity in the blood serum of the carp were significantly increased (P <0.05). Also, the amount of blood serum glucose in the carp was increased by increasing the amount of dietary molasses. (P <0.05).