The effect of different stocking densities on specific growth rate and survival rate of striped snakehead ( Channa striata) culture in bucket system

Abstract

Striped snakehead culture in bucket system with high stock rate at a good living environment, and also adequate feeding can lead to the maximization of production. However, if the stocking density is too high, it can inhibit the survival and growth of fish caused by competition for space, feed and oxygen as well as increased metabolic waste. The purpose of this study was to determine the effect of different stocking densities on the specific growth and survival rate of snakehead fish (Channa striata) in buckets. This study used is Completely Randomized Design consisting of 5 treatments and 4 replications, namely P0 (1 fish/L), P1 (2 fish/L), P2 (3 fish/L), P3 (4 fish/L) and P4 (5 fish/L). The ANOVA results showed that the difference in stocking density had a significant effect (P<0.05) on the growth rate of specific weight and length as well as the survival rate of fish. DMRT showed that P1 was the highest result for specific weight and length growth rates (0.90%/day and 0.80%/day) and the lowest at P4 (0.62%/day and 0.40 %/day). In addition, the highest of survival rate are also shown at P1 (95.42%) and the lowest at P4 (32.75 %).