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Effect of dietary supplementation with taurine, β-alanine andGABA on the growth of juvenile and fingerling Japanese flounder Paralichthysolivaceus

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Three diets supplemented with taurine, β-alanine andGABA and a control diet were fed to juvenile and fingerling Japaneseflounder to investigate the effects of the diets on growth and metabolicchanges of free amino acids in whole body and tissues. In experimentI, three diets supplemented with 1% each of taurine, β-alanineand GABA and a control diet were fed to juvenile Japanese flounderwith an initial mean body weight of 0.4 g for 4 weeks at20°C. In experiment II, the taurine-supplemented diet anda control diet were fed to fingerling Japanese flounder with an initialmean body weight of 15 g for 4 weeks at 20°C.Only supplementation of taurine in the diet of juvenile flounderimproved their growth performance in experiment I, but fingerlinggrowth performance of experiment II was not significantly relatedto taurine supplementation in the experimental diet. These resultssuggest that there is a greater requirement for taurine for thegrowth of juvenile Japanese flounder than fingerling Japanese flounder.

Keywords: GABA; Japaneseflounder; fingerling; growth; juvenile; taurine; β-alanine

Document Type: Research Article


Affiliations: 1: Department of Aquatic Biosciences,Tokyo University of Fisheries, Minato, Tokyo 108-8477 and 2: NationalResearch Institute of Fisheries Science, Yokohama, Kanagawa 235-8648,Japan

Publication date: April 1, 2003

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