Evaluation of Breeding Performance of Asian Catfish Clarias batrachus at Different dose of HCG and Latency Period Combinations

An experiment was conducted to evaluate the breeding performance in Clarias batrachus (130 +/- 1.32 g) at different HCG close and latency period combinations. The breeding performance was judged through weight of stripped egg (g) and stripping response {weight of stripped egg/(weight of stripped egg+weight of stripped ovary)}. The females injected with 1000-3000 IU HCG per kg body weight could not be stripped at 11 h latency. The weight of stripped eggs increased gradually with the increase of latency period in both 1000 and 2000 IU dose level. Smooth stripping and free flow of eggs were observed when stripped at 3000 and 4000 IU dose levels in combination with 14-23 h latency periods but a significant decrease (P<0.05) in egg was observed at 5000 IU and 17-23 h latency combination. The stripping response was the highest at 3000 and 4000 IU in combination with 14-23 h latency period. The injection of 3000-4000 IU HCG close per kg female weight in combination with 14-23 h latency was suitable to get good stripping response for the highest weight of stripped egg in C. batrachus during induced breeding operation.