Utilization of a by-product from the Jatropha biodiesel industry as a fish meal replacer in common carp Cyprinus carpio L. diets |
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| Authors: | Vikas Kumar Harinder P S Makkar Nicholas Romano Klaus Becker |
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| Institution: | 1. Aquaculture Research Institute, Department of Animal and Veterinary Science, University of Idaho, Moscow, Idaho, USA;2. Institute for Animal Production in the Tropics and Subtropics, University of Hohenheim, Stuttgart, Germany;3. Institute for Animal Production in the Tropics and Subtropics, University of Hohenheim, Stuttgart, Germany;4. Aquaculture/Fisheries Center, University of Arkansas at Pine Bluff, Pine Bluff, Arkansas, USA |
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| Abstract: | Detoxified Jatropha kernel meal (DJKM) was created through heat and solvent extraction and replaced fish meal (FM) at 0% (Control), 50% (J50), or 62.5% (J62.5) in common carp Cyprinus carpio fingerling (initial mean weight ± SD; 22 ± 0.12 g) diets over 16 weeks. Growth performance and feeding efficiencies were similar (P > 0.05) among groups, but nutrient digestibilities and digestive enzyme activities were significantly higher (P < 0.05) in Control than others. The slightly lower growth and significantly lower nutrient digestibility in carp fed DJKM indicates a need to improve the nutritive value of DJKM as a promising and sustainable FM alternative. |
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| Keywords: | Common carp Jatropha curcas kernel meal fish meal replacer hematology |
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