Growth performance of juvenile amberjack <I>Seriola dumerili</I> fed a low-fish meal diet under cage culture conditions

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  • 魚粉低減飼料を用いた養殖環境下におけるカンパチ人工種苗の成長
  • ギョフン テイゲン シリョウ オ モチイタ ヨウショク カンキョウ カ ニ オケル カンパチ ジンコウ シュビョウ ノ セイチョウ

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Abstract

The development of amberjack Seriola dumerili seedlings production has popularized its aquaculture in Japan. However, no information has been disclosed regarding the performance of seedlings after transferring to offshore net cages. In addition, the effect of extruded pellets (EP) with decreased fish meal content on the performance of amberjack has not been clarified. In the present study, artificially produced juvenile amberjack were fed a commercial EP with 2 different fish meal (FM) contents (60% and 40%) for 64 days under cage culture conditions at two different experimental stations (Nejime and Kushima) in southern Kyushu, Japan. At the end of the feeding trial, no differences were observed in growth performance and survival between dietary treatments at either experimental station. Shortly after transferring the juveniles from the hatchery to experimental cages, fish had low levels of blood chemical constituents, such as total cholesterol and triglyceride, however these values increased with time regardless of the FM content in the diet. These results suggest that artificially produced amberjack seedlings could be cultured using EP containing 40% FM under cage culture conditions.

Journal

  • Aquaculture Science

    Aquaculture Science 64 (1), 1-12, 2016

    Japanese Society for Aquaculture Science

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