Document Type : Research Paper
This study conducted to determine the effects of different amount of vitamin niacin (B3) on hematological and immune indices in Sterlet sturgeon (Acipenser ruthenus) cultured. This study was carried out at Shahid Dr. Beheshti Artificial Sturgeon Propagation and Rearing Center. Six diets include 0, 10, 20,30,40,50 mg/Kg dry food vitamin B3 for 8 week for A. ruthenus. The number of 90 fish by weight 50g in 18 fiberglas tank. The fish were fed 5% of body weight. For sampling, 3 fish from each treatment were collected from the caudal peduncle. According to result, between blood indices (red blood cell, white blood cell, hemoglobin, hematocrit, Mean Corpuscular Volume) showed significant differences (P<0.05). But in MCH and MCHC indices, lymphocytes, monocytes and eosinophils, differences were not significant (P>0.05). Between immune indices, IgM and lysozyme showed significant differences (P<0.05). According to result, 20 mg/Kg of niacin in favorable effect on hemoglobin and hematocrit and showed 30 mg/Kg niacin, IgM and lysozyme positive effect, and treated with 30 mg/Kg, both indicators show increased IgM and lysozyme. According to result in this study, it is suggested to increase the safety of 30 mg/Kg dose should be used.