The effects of dietary oxidized fish oil on the growth and lipid metabolism in hybrid sturgeons (Huso huso ♂×Acipenser ruthenus♀)
The oxidation of fat in fish diets due to oxygen penetration, high temperature and metal catalysts is common. The effects of feeding diets containing oxidized fish oil on the growth indices and lipid metabolism in young hybrid sturgeons (Huso huso ♂× Acipenser ruthenus♀) was investigated. Three different diets were implemented to three different groups: a control group, Group OFO_50 (50% oil fish oxidized) and Group OFO_100 (100% oil fish oxidized). 90 young sturgeon hybrids with an average initial weight of 212/6 ± 0/7 g, , were randomly divided into 9 fiberglass tanks with a volume of 700 liters after a 2 week adaptation period. Feeding was performed three times a day (8:00, 14:00 and 20:00) according to the specimens’ appetite during the period of the study. After 6 weeks, sampling was done to assay the growth parameters and biochemical indices. In both oxidized oil-fed groups, adverse impact on growth was seen. Also, a significant reduction in cholesterol and triglycerides was observed in the OFO_100 groups. The results showed that feeding hybrid sturgeons with diets containing oxidized fish oil, cause 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, it was undesirable and relevant to an increase in visceral fat.
| Main Authors: | , , , |
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| Format: | article biblioteca |
| Language: | Persian |
| Published: |
2016
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| Subjects: | Aquaculture, Iran, Oxidized lipid, Hybrid sturgeon, Growth, Fat metabolism, Blood, Biochemistry, Fish oil, Diet, Acipenser ruthenus, Huso huso, |
| Online Access: | http://hdl.handle.net/1834/39398 |
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