Effect of Dietary Soyabean [Glycine max (L.) Merr.] Protein Level on Growth and Feed Utilization of Oreochromis andersonii (Castelnau, 1861)
Abstract:
Oreochromis andersonii were maintained on three formulated
diets based on protein levels (20, 30 and 40%) with soya bean as the source.
The effect of dietary protein on growth and feed utilization were investigated.
The cost effectiveness of the diets was also evaluated. Both the Body Weight
Gain (BWG) and final mean weight of fish maintained on 30% protein were not
significantly different (p>0.05) from the fish fed with 40% protein diet.
The Protein Efficiency Ratio (PER) declined with protein increase (r = -0.282,
n = 268, p<0.05). There was a linear relationship (Y = 0.318x + 12.79, r2
= 0.97) between protein level and BWG. Gross margin for fish reared on 30% and
40% crude were insignificant (p>0.05) though significantly higher than the
20% crude protein fed fish and the control. The carcass protein composition
was not affected (p>0.05) by the protein level. The 30% soyabean based crude
protein is recommended for O. andersonii.
How to cite this article
A.S. Kefi, J. Kang`ombe, D. Kassam and C. Katongo, 2013. Effect of Dietary Soyabean [Glycine max (L.) Merr.] Protein Level on Growth and Feed Utilization of Oreochromis andersonii (Castelnau, 1861). Pakistan Journal of Nutrition, 12: 990-995.
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