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Abstract
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Article Information:
Growth Performance of the Reciprocal Hybrids of Clarias gariepinus (Burchell, 1822) and Heterobranchus bidorsalis (Valenciennes, 1840)
P.E. Ndimele, F.G. Owodeinde, C.A. Kumolu-Johnson, A.A. Jimoh, O.O. Whenu and O.B. Onyenania
Corresponding Author: P.E. Ndimele
Submitted: 2010 December, 25
Accepted: 2011 January, 19
Published: 2011 March, 05 |
Abstract:
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An experiment was conducted to determine the survival rate, fertilization rate, growth performance
and feed utilization of the reciprocal hybrids of Clarias gariepinus and Heterobranchus, bidorsalis. Two
genetic crosses were made: C. gariepinus♀ x H. bidorsalis ♂ (clariabranchus) and H. bidorsalis♀ x
C. gariepinus ♂ (heteroclarias). The experiment was divided into two phases; artificial propagation of the fish
species using synthetic hormone and rearing the fry for 14 days; and rearing the 14 days old fry for 35 days.
In the first phase of the experiment, survival of frys were estimated in each experimental unit (genetic cross)
while in the second phase, growth and nutrient utilization were investigated. The result revealed that the highest
%fertilization, hatching rate and %survival occurred in H. bidorsalis& x C. gariepinus % (heteroclarias) and the
differences were significant (p<0.05). Percentage weight gain and specific growth rate were significantly
(p<0.05) higher in clariabranchus than heteroclarias. Based on the result of this study, reciprocal hybrids of
Clarias gariepinus and Heterobranchus, bidorsalis is recommended for commercial aquacultural practices.
Key words: Clariabranchus, Clarias gariepinus, feed utilization, growth performance, Heterobranchus bidorsalis, heteroclarias, reciprocal hybrid, survival rate
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Cite this Reference:
P.E. Ndimele, F.G. Owodeinde, C.A. Kumolu-Johnson, A.A. Jimoh, O.O. Whenu and O.B. Onyenania, . Growth Performance of the Reciprocal Hybrids of Clarias gariepinus (Burchell, 1822) and Heterobranchus bidorsalis (Valenciennes, 1840). Current Research Journal of Biological Sciences, (2): 137-140.
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ISSN (Online): 2041-0778
ISSN (Print): 2041-076X |
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