1Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar-751002, India
Wastewater Aquaculture Division, Central Institute of Freshwater Aquaculture, P.O. Rahara, Kolkata-700118, India
* Reprint request: B.N. Paul, bnp63@rediffmail.com
A 60-days feeding experiment was conducted to evaluate the lipid requirement of Labeo bata fingerling (avg. wt. 2.87 g). Graded levels of dietary lipids were incorporated at 2 (L2), 4 (L4), 6 (L6), 8 (L8) and 10 (L10) percent levels in the semi purified diet. The semi purified diets consisted of casein, gelatin, dextrin and carboxymethyl cellulose. The net weight gain were 2.10±0.06, 2.41±0.04, 2.60±0.06, 3.10±0.06 and 2.75±0.03 g respectively in different treatment groups. The net weight gain and specific growth rate was significantly (P<0.01) higher in L8 in comparison to other lipid levels. The feed conversion ratio was significantly lower in L8. The carcass composition was significantly influenced by incorporation of different lipid levels. Carcass protein and lipid content increased with increasing lipid levels upto 8% level. The study revealed that among the lipid levels tested, 8% lipid in diet was found to be optimum for growth performance of L. bata.
Growth, Feed conversion ratio, Labeo bata, Lipid requirement, Carcass composition
