علوم زیستی دریا
Soleiman Hasanpour; Amir Parviz Salati; Bahram Falahatkar; Hamid Mohammadi Azarm
Abstract
Oxidation of fat in fish diet caused by oxygen penetration, high temperature and metal catalysts is common. the effects of feeding diets containing oxidized fish oil on growth indices and lipid metabolism in young hybrid sturgeon, (Huso huso ♂× Acipenser ruthenus♀) was investigated. 3 different ...
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Oxidation of fat in fish diet caused by oxygen penetration, high temperature and metal catalysts is common. the effects of feeding diets containing oxidized fish oil on growth indices and lipid metabolism in young hybrid sturgeon, (Huso huso ♂× Acipenser ruthenus♀) was investigated. 3 different diets: a control group, Group OFO50 (50% oil fish oxidized), Group OFO100 (100% oil fish oxidized) was designed. 90 young sturgeon hybrids with an average initial weight of 212/6 ± 0/7 g, after 2 weeks adaptation to the experimental conditions, randomly divided in the 9 fiberglass tank with a volume of 700 liters dewatering. Feeding was performed three times daily (8:00, 14:00 and 20:00) according to the appetite during the period of study. After 6 weeks sampling was done to assay the growth parameters and biochemical indices. in oxidized oil-fed groups, the adverse impact on growth in both groups was seen The significant reduction in cholesterol, triglycerides, was observed in OFO100 groups. The results showed that feeding the hybrid sturgeon with diets containing oxidized fish oil, causing a negative impact on growth and lipid metabolism. Although a slight increase in the percentage of body weight gain and specific growth rate was recorded, but it was undesirable and have been related to the increased visceral fat.