Studies on partial replacement of fish meal with oilseeds meal in the diet of major carps
2008
Tahir, M.Z.I. (University of Agriculture, Faisalabad (Pakistan). Dept. of Zoology and Fisheries) | Ahmed, I. (Fisheries Research Farm, Faisalabad (Pakistan)) | Mateen, A. (Fisheries Research Farm, Faisalabad (Pakistan)) | Ashraf, M. (Fisheries Research Farm, Faisalabad (Pakistan)) | Naqvi, Z.H. (Government Coll., Faisalabad (Pakistan)) | Ali, H.
A year long experiment was carried out with seven treatments (T1-T7) to investigate the possibility of partial replacement of fish meal with sunflower seed meal and canola seed meal in the diet of major carps. A standard fish diet (30% crude protein) for treatment 1 (T1) was formulated using fish meal, cotton seed meal, maize gluten and rice polish. Experimental fish diets for the treatments T2, T3 and T4 were prepared by replacing fish meal from standard diet (T1) with sunflower seed meal on iso-nitrogenous basis at 20, 40 and 60% levels, respectively. Similarly experimental fish diets for the treatments T5, T6 and T7 were prepared by replacing fish meal from standard diet (T1) with canola seed meal on the above mentioned three levels. The results revealed that Catla catla and Labeo rohita performed the best in terms of final average body weight (1227.14 & 1065.99 g, respectively) and specific growth rate (1.067 & 0.997%, respectively) under the treatment T1 (receiving standard diet). Both the species showed lesser growth under the treatments receiving diets containing sunflower and canola seed meal (T2-T6). This trend of fish growth indicated that sunflower and canola seed meal may not be suitable for the diets of C. catla and L. rohita. However, Cirrhina mrigala performed the best (with final body weight of 1014.29 g & specific growth rate of 0.918%) in the treatment T5, where 20% N from fish meal was replaced with canola seed meal. This indicated the possibility of inclusion of canola seed meal in the diet of C. mrigala.
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