Kakdwip Research Centre of CIBA (Central Institute of Brackishwater Aquaculture), Kakdwip, South 24 Parganas, West Bengal 743347, India
* Corresponding Author: Sr. Scientist, KRC of CIBA, Kakdwip, South 24 Pgs, W.B. 743347, e-mail- debasiskrc@yahoo.com, dedebasis47@gmail.com
Online published on 24 July, 2012.
Study on dietary lipid requirement was carried out to evaluate the optimum level of lipid for formulating cost effective feed ofMugil cephalus. A 42-day of experiment was conducted with twenty five fishes of average wt. ranging from 0.76 to 0.84 g per replicate and were stocked in fibre reinforced plastic (FRP) tanks containing 400 liter strained clear brackish water in triplicate. Four iso-proteinous (CP-30%) purified diets were prepared with supplemented lipid level of 0, 3, 6 and 9% and were fed to fishes of groups I, II, III and IV, respectively, @ 10% body weight. Total live weight gain (g) and weight gain percent was higher in group supplemented with 6% lipid. Feed conversion ratio (FCR) was found to be significantly (P<0.01) lower in fish supplemented with 6% lipid than that of fish fed other test diets. Protein efficiency ratio was significantly higher (p<0.01) in fish fed diet with 6% lipid. Therefore, it can be concluded that optimum dietary lipid requirement of Mugil cephalus fry is 6%.
Mugil cephalus, Lipid requirement, Growth, FCR
