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
