Dietary phosphorus requirement of juvenile tiger barb, Barbus tetrazona (Bleeker, 1855) |
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| Authors: | Adrian Elangovan K F Shim |
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| Institution: | (1) Nutrition Laboratory, School of Biological Sciences, National University of Singapore, 10 Kent Ridge Crescent, 119260, Singapore |
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| Abstract: | The effects of increasing dietary concentrations of phosphorus on growth, feeding efficiency and body composition were studied in the tiger barb (Barbus tetrazona) (Bleeker, 1855). Juvenile tiger barbs (initial weight 0.33 ± 0.02 g) were fed purified diets containing graded levels of KH2PO4 to provide 0.17–1.57% available dietary phosphorus for 8 weeks in freshwater glass aquaria. The weight gain, feeding efficiency and mineral composition of the whole body and bone were significantly (p<0.05) affected by dietary phosphorus. Growth response data calculated by broken line analysis showed that the minimum dietary phosphorus level required for maximum growth was 0.52%. The carcass protein, fat and ash contents but not moisture were affected by various dietary phosphorus levels. Fish fed a low-phosphorus diet had high body crude fat. |
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| Keywords: | Barbus tetrazona nutrition dietary requirement-phosphorus growth |
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