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은어 자어 (Plecoglossus altivelis) 사육에 있어서 담수산 rotifer (Brachionus calyciflorus)의 먹이효과

Food Value of Freshwater Rotifer (Brachionus calyciflorus) for Culture of Sweetfish (Plecoglossus altivelis) Larvae

이상민|한현섭|임영수|박흠기|이균우
한국수산과학회 (The Korean Society of Fisheries and Aquatic Science)|2004.02|한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)|제37권 제1호|pp. 7-12

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초록

Abstract

This study investigated the possibility of salinity acclimation of freshwater rotifers (Brachionus calyciflorus) as live food for sweetfish (Plecoglossus altivelis) larvae, and also examined the optimal salinity for the growth of sweetfish. Freshwater rotifers cultured in 0 and 4PSU and seawater rotifers (B. rotundiformis) cultured in 33PSU were supplied to the larvae with four kinds of enrichment material (condensed freshwater Chlorella, ω-yeast, baker's yeast, Super Selco) and larval growth at 4 PSU was examined. Growth of the freshwater rotifers positively increased from 0PSU to 6PSU, but decreased when over 8PSU was reached. Growth and survival of the sweet fish larvae reared in 0PSU were significantly lower than those reared in either 4PSU or 33PSU. This indicated that the freshwater rotifers (B. calyciflorus) could be used as live food for sweetfish larvae reared in 4PSU. The body weight of sweetfish larvae fed on freshwater rotifers enriched with Super Selco was the highest at 0.163mg, but there was no significant difference in survival and body length of the fish fed with the other enrichment materials. The content of n-3 HUFA of the sweetfish larvae fed on the freshwater rotifers enriched with Super Selco and the condensed freshwater Chlorella was higher than that enriched with ω-yeast and baker's yeast. These results indicated that B. calyciflorus cultured with the condensed freshwater Chlorella could be used for the sweetfish larvae without enrichment, and the most efficient enrichment material for B. calyciflorus is Super Selco.

참고문헌 (23)

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