Balanced diet for the broodstock of Catla catla and Labeo rohita and induced breeding performance using ovaprim

Rearing of the broodstocks of Catla catla and Labeo rohita on 5 mm pelleted diet consisting of fish meal 10%, groudnut oilcake (GOC) 35%, soyabean oil cake (SOC) 20%, wheat flour 10%, rice bran 24.8%, trace mineral mix 0.1% an d vitamin mix 0.1% (crude protein about 30% and gross energy about 3,800 kc al/kg) @ 2-3% of the body weight gave very good maturity by the end of May or early June which was maintained through August. Administration of ovapri m in catla (females 0.4-0.5 ml/kg; males 0.2 ml/kg) and rohu (females 0.3-0 .4 ml/kg; males 0.1-0.2 ml/kg) induced 100% spawning success in both the ca rps, except in one case where it was partial in catla. 3 sets of Labeo rohi ta yielded 101 litres of fertilized eggs (1.76 lakh spawn /kg body weight) with 90-95% fertilization showing excellent performance of the broodfish.