Studies on the nutrition of brackish water catfish - Chrysichthys nigrodigitatus
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Four groups of brackish water catfish were fed four diets: N. F. (NIOMR formula 1 feed). A. B. and C. for seven weeks. Feeds N.F., A., B. and C. contained 1.21% fish oil + 5.59% vegetable oil; 1.21% fish oil + 7.39% vegetable oil; 1.21% fish oil + 9.09% vegetable oil; 1.21% fish oil +10.89% vegetable oil respectively. The total amounts of vegetable oil in A., B. and C. included the supplementation of the residual oil in the ingredients with 2%, 4% and 6% respectively with ordinary cooking mixed vegetable oil. Results of feeding trial showed that growth was best in the group led diets containing 10.89% vegetable oil and least in those containing 9.09% vegetable oil. There seemed to have been a positive correlation between growth rate and hepatic phospholipids, cholesterol, triglycerides and free fatty acids.