Rearing of fry to fingerling of saul (Channa striatus) on artificial diets

Abstract

: Three diets (F1, F2 and F3) containing protein levels of 38.60 to 38.98 % crude protein were used to assess the growth performances of Channa striatus fry (weight 0.52±0.0 to 0.53±0.02 g) in a completely randomized experiment design in five replicate set for 12 weeks. The fry were reared in 15 FRP tanks at a stocking density of 100 fry m3 and fed ad libitum. The diets F1 and F3 showed significantly (P<0.05) low survival levels of 74±1.2% and 76±4.4% in comparison to diets F2 (82±3.1%) 84th day of rearing. The net biomass gain %, length gain %, SGR, PER and per day weight gain were found significantly (P<0.05) higher and FCR low with diet F2 in comparison to diets F1 and F3. The proximate analysis of carcass showed that the fishes fed diets F2 had significantly (P<0.5) higher deposition of crude protein and lipids in the tissue. The study revealed that the growth performance of C. striatus fry is better in feed F2 and the fry could be reared to fingerling size on formulated diets.