Abstract
The study was carried out for six (6) weeks at the Department of Fisheries Teaching and Research farm, Modibbo Adama University, Yola, to compare the reproductive performance of Clarias gariepinus using synthetic (ovaprim) and natural (C. gariepinus pituitary extract) hormones . At the end of the feeding trial, the fecundity, percentage fertilization, hatchability, and survival rates of the hatchlings were estimated using standard procedure. The hatchlings were further raised for six weeks and the increase in weight was determined. The results showed that female broodstock injected with C. gariepinus pituitary extract (CgPE) had a higher fecundity (124,000) while the female injected with Ovaprim had 65,000 eggs. The weight of the testes significantly differed (p<0.05) across the treatments, the right lobe weighed 1.63g while the left lobe weighed 1.98g . Subsequently, a higher fertilization rate was recorded in CgPE (91.1%) while Ovaprim had 85.55% . However, Ovaprim had a higher percentage hatchability of 82.93% while CgPE had 82.73% . At the end of the six (6) weeks feeding period, the survival rate was higher in the fish treated with CgPE (82.31%) while the fish injected with Ovaprim had 79.68% . The research exposed the efficacy of using CgPE in the absence of synthetic hormone, CgPE is a preferred substitute that Hatchery managers can utilize for fingerlings production.
Highlights
The study of Onyia et al (2015) reported that fish is an essential source of animal protein because of the nutrients it contains and more efficient in terms of reproduction
The results showed that female broodstock injected with C. gariepinus pituitary extract (CgPE) had a higher fecundity (124,000) while the female injected with
The results of the C. gariepinus treated with Ovaprim and C. gariepinus Pituitary Extract (CgPE) are shown in Table 1, which showed the Weight of the breeders across the treatments
Summary
The study of Onyia et al (2015) reported that fish is an essential source of animal protein because of the nutrients it contains and more efficient in terms of reproduction. African catfish is the most cultivated aquatic organism in Nigeria, it is acceptable and consumed by the majority of the population, it is bred all year round, and the flesh quality is high (Ochokwu et al, 2015a). The reproduction technique is one of the factors that affect the breeding performance of any fish species on the farm (Ochokwu et al, 2015a). It influences the rate of fertility and hatchability during the hatching process. The breeding process can be carried out naturally or through artificial hypophysation This is the use of hormones either natural or synthetic. Induced breeding through hypophysation has produced a high percentage of fertilization and increased
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
