Induced ovulation and spawning of African catfish(Clariasgariepinus) using different dose of ovaprim

Abstract

The main objectives of this study w induced to spawning using different dose of synthetic hormone Ovaprim. As the spawning performance of Clarias gariepinus induced to spawningusing different dose of synthetic hormone Ovaprim. This study was conduct at the Fish Hatchery Unit, at Department of Fisheries Science and wildlife, College of Animal Production Science and Technology, Sudan University of Science and Technology, during the period from July to October 2018.The brood stock used for the study were collected and conditioned for a week before the inject and feeding by control feed. Fish were fed at 2,5% of body weight twice daily. The selected brood stock were kept separately in different ponds without feeding them, after they were injected with 5 ml Ovaprim per kg live weight and then left for 12 hours latency period as a post adulatory maturation period and to ensure high hatching rates and low proportion of deformed larvae. Data collected was analyzed using simple destructive statistics to determine the mean and percentage .The results showed that high larval production (50%) in the treatments II out of which 10% survived rate, indicates an overall good egg quality and effectiveness of ovaprim, including ovulation and spawning in the African catfish. There was difference among number of fertilized eggs, number of hatched eggs, % larval production and survival in all three treatments