Establishment of Direct Enrichment-Method of Taurine to Rotifer

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  • TAKAHASHI Takayuki
    Fish Research and Development Section, Marubeni Nissin Feed Co. Ltd.
  • AMANO Takayuki
    Fish Research and Development Section, Marubeni Nissin Feed Co. Ltd.
  • TAKEUCHI Toshio
    Department of Marine Biosciences, Faculty of Marine Science, Tokyo University of Marine Science and Technology

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Other Title
  • 海産ワムシへのタウリン直接強化方法の確立
  • カイサン ワムシ エ ノ タウリン チョクセツ キョウカ ホウホウ ノ カクリツ

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Abstract

Euryhaline rotifers Brachionus plicatilis and B. rotundiformis are indispensable live food organisms for mass culture of marine fish larvae. However, these rotifers contain small amount of taurine which is one kind of free amino acids. This experiment is conducted that S type rotifer B. rotundiformis can be enriched taurine by the direct method that dissolved taurine in the rotifer medium. As a result, it was clarified that taurine was accumulated in the rotifer by the direct method. Moreover, it was observed that the taurine concentration of the rotifer medium and the taurine content in the rotifer showed a straight-line proportion. In addition, the content of taurine in rotifer would almost become constant amount after 16 hours, and the enriched taurine levels were kept about 75% of initial amount after eight hours from final enrichment. Therefore, it was proved that direct method is the most practical method to enrich taurine in rotifer.

Journal

  • Aquaculture Science

    Aquaculture Science 53 (2), 121-126, 2005

    Japanese Society for Aquaculture Science

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