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.
View Volume: http://bp.bookpi.org/index.php/bpi/catalog/book/138
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