配合飼料の粒径がヒラメ稚魚の摂餌量と成長に及ぼす影響

DOI 日本農学文献記事索引 Web Site 被引用文献2件 参考文献11件

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タイトル別名
  • Effect of Diet Size on Food Intake and Growth of Japanese Flounder Paralichthys olivaceus Juveniles
  • ハイゴウ シリョウ ノ リュウケイ ガ ヒラメ チギョ ノ セツジリョウ ト セイチョウ ニ オヨボス エイキョウ

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This study aims to investigate the effects of different diet sizes on the growth of Japanese flounderParalichthys olivaceusjuveniles by controlling diet sizes that are possible for the juveniles to feed on. For the experiment, diet was sieved out to six measured sizes. The modes (ranges) of minimum diameter were 375μm (225-538μm), 438μm (288-613μm), 500μm (350-700μm), 700μm (450-913μm), 800μm (563-1063μm) and 925μm (713-1138μm) . These diet sizes were smaller than the mouth size (=upper jaw length×√2) of the fish, thus all juveniles were able to feed on all sizes of diet. Few juveniles smaller than 10 mm in standard length (SL) fed on the diet. For fish of 10-15 mm SL, many of them fed on the diet when the size was 438μm or larger. For fish larger than 15 mm SL, decreasing proportion of non-feeding fish were found as the diet size increased. For the juveniles of 15-25 mm SL, food intake of 500μm size was less than that of 700μm, and of 25-30 mm SL, food intake increased as the diet size became larger. When comparing diet sizes between 500μm and 925μm with the total food intake weight being the same, it was found that fish which fed on the larger diet grew faster. In order to achieve the most efficient growth of Japanese flounder juveniles, it is necessary to feed them on the maximum size diet that they can take.

収録刊行物

  • 水産増殖

    水産増殖 55 (1), 41-46, 2007

    日本水産増殖学会

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