BREEDING OF INDIAN MAJOR CARPS WITH THE SYNTHETIC HORMONE DRUG OVAPRIM IN UTTAR-PRADESH

In order to evaluate the efficacy of ovaprim over the pituitary glands (PG) in induced breeding of Indian major carps under agroclimatic con ditions of Uttar Pradesh, matured brooders of Catla catla, Labeo rohit a and Cirrhinus mrigala were administered intramuscularly (i. m.) with ovaprim (single injection) at the dosage of 0.25-0.60 ml/kg. Control fishes received i. m. injections of carp PG - two split doses (3 & 8 m g / kg) for females and single dose (3-4 mg / kg) for males. Spawning response of rohu was complete both with ovaprim (0.35 / kg) and PG. Th e mrigal responded even to 0.25 ml / kg ovaprim. Even catla, the speci es slightly difficult to breed in this area, also responded fairly wel l with the drug (0.60 ml / kg). The general conditions of the fertiliz ed eggs during hatching also remained better with ovaprim. The breedin g response of the Indian major carps to ovaprim shows the efficacy and potential application of the drug over PG in the agroclimatic conditi ons of Uttar Pradesh.