Estimation of the Dietary Lipid Requirement Level of the White Crayfish Procambarus acutus acutus |
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Authors: | Donald A. Davis Edwin H. Robinson |
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Affiliation: | Department of Wildlife and Fisheries Sciences Texas A&M University College Station, Texas 77843 |
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Abstract: | Six isonitrogenous and isoenergetic diets containing graded levels of lipid (menhaden fish oil) were fed to juvenile white crayfish ( Procambarus acutus acutus ) over a 10 week period. A significant depression in weight gain was observed in crayfish fed diets containing 9% or more lipid. There were no significant differences in growth of crayfish fed diets containing 0 to 6% lipid. Whole-body percentages of lipid and dry matter decreased, and protein increased in crayfish fed high-lipid diets. Dietary lipid did not appear to influence survival or molting frequency. Whole-body lipids generally reflected dietary fatty acid composition. |
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