Growth and Economic Performance of Clarias gariepinus fed different sources of Calcium and Phosphorus Diets
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Aarode, O. O.
Journal of Fisheries Sciences
One hundred and fifty juveniles of Clarias gariepinus of mean weight 53 g were stocked ran-domly at seven fish per tank (52.5 X 33.5 X 21 cm3) in triplicate. Seven experimental diets were formulated with varied inclusion levels of calcium and phosphorus sources; Diet 1 (1 % DCP and 1% Egg shell), Diet 2 (2% DCP), Diet 3 (2% Egg shell), Diet 4 (1% Bone meal and 1% Oyster shell), Diet 5 (1% Egg shell and 1% Bone meal), Diet 6 (0.5% Egg shell, 1% Bone meal and 0.5% Oyster shell) and Diet 7 had no extra calcium or phosphorus source. The mean weight gain, MWG and specific growth rate, SGR of the result showed significant difference (P < 0.05) across the test treatments. Diet 2 showed the highest MWG and SGR (63.5 g and 2.13 %/day respectively), it also showed highest value for protein intake (23.09) while Diet 4 had the best values for protein efficiency ratio (3.01) and feed conversion ratio (0.96). Diet 2 (2% DCP) recorded remarkable significant different (p < 0.05) values for the net profit value, investment cost analysis and gross profit for the tested economic indices compared to other di-ets. Therefore, results from the study suggest 2% inclusion level of DCP as optimum require-ment for the growth of C. gariepinus.
Mineral utilization, Dicalcium phosphate, Diet, C. gariepinus , Mineral utilization , Dicalcium phosphate , Diet , C. gariepinus , Research Subject Categories::NATURAL SCIENCES
Lawal, M.O., Aderolu, A.Z., Aarode, O.O. and Yekinni, A. (2013). Growth and Economic Performance of Clarias gariepinus fed different sources of Calcium and Phosphorus Diets. Journal of Fisheries Sciences, 7(2): 187- 193.