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자료유형
학술저널
저자정보
저널정보
한국수산과학회 양식분과 한국양식학회지 한국양식학회지 제17권 제3호
발행연도
2004.8
수록면
187 - 196 (10page)

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This study was carried out to investigate changes in biochemical composition of rotifer, Brachionus plicatilis, enriched with the commercial enrichments (Enhance, Advantage, Algamac-2000, DHA-Selco and Advantage+Chlorella) at various durations of enrichment (0, 6, 12 and 24 hr) to improve the growth and survival of marine fish larvae. Total lipid content of rotifers enriched with various enrichments tended to increase with an increase in durations of enrichment up to 6 hr, but after that, was not significantly affected by enrichment materials. However, total protein content of rotifers enriched groups except for Advantage+Chlorella decreased with the increase in duration of enrichment. The highest protein/lipid ratio showed 2.7 in rotifer enriched with the Advantage+Chlorella. The phospholipid/lipid ratio of rotifer enriched with the Enhance, Advantage and Advantage+Chlorella groups was significantly higher than that of enriched rotifer with the Algamac-2000 and DHA-Selco groups. The highest DHA level, 2.5%, of rotifer enriched for 24 hr was obtained in the Advantage, but was not significantly different among other groups, except for Algamac-2000. No significant difference in DHA level of rotifer enriched with the DHA-Selco, Algamac-2000 and Advantage+Chlorella groups was observed between 12h and 24hr of enrichment. The DHA/EPA ratio in the enriched rotifers varied among enrichment material groups, ranged from a high level of 11.1:1 in the Advantage+Chlorella group to a low level of 4.1:1 in DHA-Selco group. The results from this study indicate that rotifers enriched with Enhance, Advantage and Advantage+Chlorella seemed to be effective to improve nutritional value of rotifer for marine fish larvae because phospholipid, DHA/EPA and protein/lipid ratios of rotifer enriched with Enhance, Advantage+Chlorella were higher than those of rotifer enriched with either DHA-Selco or Algamac-2000. Especially, supplementation of the Chlorella to these enrichments would appear to be effective for improvement of fish larval performance because of no reduction of protein level in rotifer, which is critical for growth of fish larvae.

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UCI(KEPA) : I410-ECN-0101-2009-529-015356455