ビタミンC源であるアスコルビン酸-2-モノリン酸Mg2+がイシダイの産卵に及ぼす効果

書誌事項

タイトル別名
  • Spawning Performance of Striped Knifejaw, <I>Oplegnathus fasciatus</I> Fed Graded Levels of Ascorbyl-2-monophosphate Mg<SUP>2+</SUP> as Vitamin C Source
  • ビタミン C 源であるアスコルビン酸-2-モノリン酸 Mg<SUP>2+</SUP>がイシダイの産卵に及ぼす効果
  • Spawning performance of striped knifejaw Oplegnathus Fasciatus fed graded levels of Ascorbyl 2 monophosphate Mg 2 as vitamin C source

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抄録

This study aimed to improve spawning performance of striped knifejaw using ascorbyl-2-monophosphate Mg salt (APM) as a dietary ascorbic acid (AsA) source. Five experimental diets, a control diet 1 without APM and four test diets 2-5 with 500, 1,000, 3,000 and 6,000 mg AsA/kg diet in an equivalent basis of APM, respectively, were prepared using a semi purified fish meal basal diet. Each diet was fed to duplicate broodfish groups consisting of 4 females and 2 males, having mean body weight of 587 and 595 g, respectively, once a day for 21 weeks, from April 2006. Dietary APM promoted earlier onset of spawning and induced a tendency of improving egg quality; diet 2 had higher tendencies in egg production, buoyancy, hatching rate and larval survival activity index. Dietary APM significantly correlated to AsA levels in eggs. Groups fed diets 4 and 5 tended to induce higher abnormal larvae than groups fed diets 1-3. These results revealed that the broodfish of striped knifejaw effectively utilized APM as a dietary AsA source and promoted the early onset of spawning and performance; but high dietary APM might cause ill effects on egg quality.

収録刊行物

  • 水産増殖

    水産増殖 56 (1), 81-87, 2008

    日本水産増殖学会

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