Green Global
Foundation   Journal
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OBSERVATIONS ON INDUCED BREEDING OF SNAKEHEAD MURREL, Channa striatus (BLOCH, 1793) (Pages : 65 - 68)

An experiment was conducted on the induced breeding of the snakehead Murrel, Channa striatus (Bloch, 1793) during April to June 2000 in a minipond at the backyard of Vice Chancellor’s house and at the hatchery of Zoological Garden, University of Dhaka, Bangladesh. The breeding was performed with the treatment of pituitary gland (PG) hormone. Six replicate trials were done to observe the effects of different doses of PG of carps on induced spawning activities of C. striatus. The eggs and sperms were obtained just by stripping and then fertilization was done by artificial insemination. In every experiment of six replicate trials, the females were treated with PG hormone at the rate of 40 or 45 mg/kg body weight and 80 or 90 mg kg body weight for the first and second dose respectively after an interval of seven hours. The males were treated with PG at the rate of 40, 45, and 60 mg/kg body weight in six replicate trials at the time of second injection of female. The fishes which received 45 mg /kg body weight in first injection and 80 mg/ kg body weight in second injection gave satisfactory result. The ovulation was recorded after 9-12 hours of the second dose of injection. The average total number of eggs laid by individual female (fecundity) was estimated to be 17273 (9696-22787) /kg body weight. The fertilization rate was observed 35-80%. Hatching occurred within 28-48 hours after fertilization at water temperature of 25-290 C. The percentage of hatching rate varied from 45- 82% with an average of 62.33%. The overall breeding performances of C. striatus were found to be satisfactory for the commercial production of this fish in Bangladesh. Download