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자료유형
학술저널
저자정보
저널정보
한국수산과학회 양식분과 한국양식학회지 한국양식학회지 제11권 제4호
발행연도
1998.11
수록면
437 - 447 (11page)

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In mass production of larval rockfish, Sebastes schlegeli, high mortality had been observed frequently. This may be the consequence of the low nutritional quality of the live feeds used. This experiment was designed to find out a suitable diet for the mass production of rockfish larvae. Three kinds of live feeds were tested ; plutei of sea urchin (Hemicentrotus pulcherrimus), L-type rotifers (Brachionus plicatilis) and Artemia nauplii. The latter two were enriched with ω-yeast, Spirulina platensis and Super Selco before feeding to rockfish larvae.
The sea urchin plutei caused to poor survival and growth rates for larval rockfish, and there-fore, they were not seemed as proper feed for rockfish larvae. Enrichments of rotifers and Artemia nauplii with ω-yeast, Spirulina platensis, or Super Selco improved survival and growth rate. But, rotifers enriched with Super Selco resulted in better rockfish larvae survival than those enriched with ω-yeast.
A sudden increase of mortality occurred around 11 days after birth. In this critical period, a shift feed such as Artemia nauplii had been supplemented with rotifers. After this critical transition period, the mortality gradually decreased by feeding Artemia nauplii enriched with PUFA. Feeding of mixed feed with rotifers and Artemia nauplii resulted in better larval survival and growth than those of each live food alone.

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