The Effect of Diets Supplemented with Vitamins C and E on Plasma Cholesterol in Adult Sterlet, Acipenser ruthenus

This study was conducted in order to characterize the different levels of dietary vitamin Cand vitamin E on plasma cholesterol of sterlet in propagation center of Sturgeon Research Institute. Nine experimental diet including threelevels of vitamin E, D-alpha-tocopherol, (0, 100 and 400 mg kg1- diet) andthreelevels of vitamin C, L-ascorbyl-2-polyphosphate, (0, 100 and 400 mg kg1- diet) wereprepared and used for feeding fish in two replicates for 15 weeks. After fish adaptations with artificial food, 15 sterlets (Acipenser ruthenus) with the average weight of 350.92±14.28g were divided into 18 tanks. The fish were fed 2% their wet body weighs. Blood samples were obtained from three fish of each tank at the end of week 5 and week 15. The results of blood analysis showed that the highest amount of cholesterol at the end of week 5 was observed in E0 C100 mg/kg and E100 C400 mg/kg treatments (diets 2 and 6) and at the end of week 15 was observed in E100 C0 mg/kg treatment (diet 4) (P<0.05). On the other hand the lowest amount of cholesterol at the end of week 5 and week 15 was observed in E100 C100 mg/kg (diet 5) and E400 C100 mg/kg (diet 8), respectively (P<0.05). The results of this study revealed that different levels of vitamin C and vitamin E may have some effects on cholesterol fluctuations of sterlet