Effect of Different Doses of Ovulin Hormone on the Induced Breeding Performance of Clarias gariepinus

The study was conducted to determine the effects of different doses of ovulin on the induced breeding performance of Clarias gariepinus. The experiment was set up in a completely randomized design (CRD). 12 broodstocks were used for the experiment (9 females, 3 males) and the broodstock were distributed into three treatments (Treatment A was injected with 0.3ml/kg, Treatment B was injected with 0.5ml/kg and Treatment C was injected with 0.7ml/kg) and each treatment was replicated three times. The result showed that Treatment C had the highest mean values for fertilization rate (88.12%) and was significantly different from the other treatments. It also has higher value for Hatching rate (82.07%) but lower rates for larval survival (83.60%). Treatment B had the highest value for larval survival with 85.20% followed by Treatments A and C with mean values of 84.23% and 83.60% respectively. The present investigation demonstrated that C. gariepinus can successfully be induced to ovulate at 0.3ml Ovulin per kg body weight, lower than the recommended 0.5ml/kg dosage, ensuring high quality eggs and more normal larvae.