Commercial production of Clarias fry and fingerlings in indoor and outdoor concrete tank systems

Madu, C.T. and Okoye, F.C. and Ita, E.O. (1987) Commercial production of Clarias fry and fingerlings in indoor and outdoor concrete tank systems. In: 5th Annual Conference of the Fisheries Society of Nigeria (FISON) , 22-25 Sep 1986 , Ilorin, Nigeria.

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Abstract

Induced breeding technique by hypophysation is being applied at the Kainji Lake Research Institute Fisheries Division Hatchery complex in New Bussa, Nigeria, for the production of Clarias fry and fingerlings in indoor and outdoor concrete tank systems. The hatchlings are fed on livefood (zooplankton) and artificial feed. Source of zooplankton is from cultured stock which is maintained throughout the breeding season by fertilization. Production values show that an average of over 4,000 hatchlings (larvae) can be produced by a female breeder (over-700g wt) and percentage survival after two months ranges between 70 to 75%. With the proposed modification and expansion project, an estimated production of over 0.5 million fingerlings per breeding season is projected

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