##plugins.themes.huaf_theme.article.main##
Abstract
Feed generally plays an important role in fish quality, especially the high-value fatty acids in fish muscle. The present study aimed to evaluate the effects of oil ingredients on fatty acid profiles of catfish liver. The experiment was set up with 4 treatments (D1, D2, D3, D4) with 4 oil ingredients used including rice bran, linseed, fish oil, soybean oil, respectively. A treatment with combination of linseed and fish oil (D5). A commercial treatment (D6). Liver was analyzed by GC-FID system. After 6 months of the feeding trial, the results showed that essential fatty acids in the fish liver tend to change similarly. In which, Oleic acid was the highest in D1 (34,46%). Linoleic acid was the highest in D4 (6.67%). -Linolenic acid contained higher in fish fed linseed diet (D2) (2.94%), followed by the linseed and fish oil diet (D5) (2.02%), much higher than the other treatments. Arachidonic acid of D6 (5.27%) was higher than those in the others treatment. Eicosapentaenoic acid was higher in D2 (1.32%) and D5 (1.25%). Docosahexaenoic acid was higher in D3 (7.66%) and D5 (7.47%). Highly unsaturated fatty acid of D4 (14.41%) was the highest. The total of omega-3 was higher in D2 (10.84%). The total of omega-6 was higher in D4 (14.48%). The ratio of omega-3/omega-6 was the highest in D2, the lowest was in D6. Overall, the study results revealed that the fatty acid profiles in striped catfish liver reflect the fatty acid profiles of experimental feeds.