Intensive Production of the African Catfish Clarias gariepinus (Burchell, 1822) Fingerlings Using Local Materials in Recycled Water | Chapter 06 | Advances in Agriculture and Fisheries Research Vol. 1

This study was conducted with the aim of producing intensively and cheaply the fry of the African catfish Clarias gariepinus at the Akak Essatolo Fish Farm in Ebolowa, South Region Cameroon. For that, 10 broodstock of C. gariepinus, were used for the artificial reproduction. Pituitary extracts and Ovaprim hormones were used to induce oocytes maturation on females. Eggs were obtained by abdominal pressure of the female. Wicks (or Local raffia fibbers (Raphia regalis)) and mesh frame were used as incubators of fertilized eggs. 12 experimental batches each consisting of 50 g of fertilized eggs were spread in triplicates on both types of incubators previously arranged in closed-circuit tanks. Fertilized eggs were enumerated by direct observation. At the end of the hatching (D0) and of vitelline resorption (D3), larvae of each experimental lot were counted. The results obtained indicate that: Similar (P=.05) absolute and relative fecundities used were recorded in all treatments. Female eggs induced with pituitary extracts and incubated on raffia fibbers recorded lower (P˂.05) fertilization and hatching rates. All other treatments were comparable (P=.05) for these parameters. Deformed larvae rates were comparable (P=.05) for all treatments. Survival rates at the end of yolk sac resorption (J3) were higher (> 70%) in all treatment. However treatment with Ovaprim and wick, showed a survival rate (71.1%) significantly (P ˂ .05) lower than the other treatments (> 80); which have otherwise remained comparable (P=.05). It was concluded that, the superiority of ovaprim at the beginning of reproduction is offset by the poor survival rate, which is better with the pituitary gland. Then, the use of the synthetic hormone is not economical for optimal production of C. gariepinus fry. In the same way a mastery of the use of the raffia fibbers will improve the cost-effectiveness and consequently will decrease the production costs.

Author(s) Details

Claudine Tekounegning Tiogué

Laboratory of Applied Ichthyology and Hydrobiology, School of Wood, Water and Natural Resources (SWWNR), Faculty of Agronomy and Agricultural Sciences (FAAS), The University of Dschang, P.O.Box 786, Ebolowa Antenna, Cameroon.

Delphin Alfred Eva Ambela

Institute of Fisheries and Aquatic Sciences of Yabassi, The University of Douala, P.O.Box 2701, Douala, Cameroon.

Paulin Nana

School of Wood, Water and Natural Resources (SWWNR), Faculty of Agronomy and Agricultural Sciences (FAAS), The University of Dschang, P.O.Box 786, Ebolowa Antenna, Cameroon.

Minette Eyango Tomedi–Tabi

Institute of Fisheries and Aquatic Sciences of Yabassi, The University of Douala, P.O.Box 2701, Douala, Cameroon.

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