EFFECT OF CARP PITUITARY EXTRACT AND OVAPRIM HORMONE ON REPRODUCTIVE PERFORMANCES OF AFRICAN CATFISH (CLARIAS GARIEPINUS)

EFFECT OF CARP PITUITARY EXTRACT AND OVAPRIM HORMONE ON REPRODUCTIVE PERFORMANCES

OF AFRICAN CATFISH (CLARIAS GARIEPINUS)

Ahmed A. A. Ali¹, Mohamed E. Farag² and Adel Fathey³

^1,3 Fish physiology and hatchery Department.

² Genetics Department.

Central Laboratory for Aquaculture Research, Abbassa, Sharkia, Egypt.

ABSTRACT

The present study was conducted to evaluate the effect of carp pituitary extract (CPE) and Ovaprim hormone on reproductive performance of broodfish African catfish (Clarias gariepinus). A total number of fish were 45 males (796-803.3 g) and 45 females (781-782.3 g). All fish were divided to three treatments. First treatment 15 females injected with carp pituitary extract 4 mg / kg (CPE) and 15 males were injected with carp pituitary extract 2 mg / kg (CPE) in three tanks. Second treatment 15 females injected with 1 ml Ovaprim /kg and 15 males injected with 0.5 ml Ovaprim /kg in three tanks. The third treatment 15 females were injected with 0.5 ml Ovaprim /kg and 15 males injected with 0.25 ml Ovaprim /kg each treatment in three tanks. The results of the latency time, total eggs number, mass of eggs/Female, total Fry number, fry number/ Female, hatching rate, relative fecundity, total amount of dose, total cost of dose and the cost of dose/ 1000 fry were recorded. The results revealed that total eggs number, mass of eggs/Female, total Fry number, fry number/ Female, hatching rate and relative fecundity were significantly higher in hormonal injected than in CPE treatment. While, Ovaprim used at 0.5 ml/kg/female and 0 .25 ml/kg/male lower the cost of dose/ 1000 fry, LE than injected with CPE.