仔稚魚用生物餌料の一般組成およびミネラル組成〔種苗生産における初期生物餌料の栄養価に関する研究-1-〕

概要

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Proximate and mineral compositions of Brachionus, Artemia, Tigriopus, Acartia, Moina, and Daphnia were determined in order to clarify their nutritional value as living feeds for the seed production of fish. Culture media such as baker's yeast and freshwater or marine Chlorella greatly affected the proximate composition of Brachionus, but not their mineral compositions. When comparing the rotifers cultured with baker's yeast with those cultured with Chlorella, the water content was higher in the former and the lipid content in the latter. There were also no marked differences in the mineral compositions of Tigriopus and Moina due to the differences of culture media, although a slight change was observed in the contents of trace elements. Artemia from different places showed a similar mineral composition regardless of their place of production, except that the iron content was several times higher in Artemia from South America and Canada than those from San Francisco. A slight seasonal variation was observed in the content of trace elements of Acartia caught in May, June, and November. The results of the present study show that minerals are not principal factors in the dietary value of living feeds.
日本水産學會の論文