Abstract
Fertilized oyster eggs, S-rotifer (Brachionus rotundiformis) and SS-rotifer (Brachionus sp.), were tested either solely or in combination for their suitability as feed for early stage grouper (Epinephelus coioides) larvae. Sizes of S-rotifers ranged between 143–224 µm lorica length with mean 182±21µm, and SS-rotifers between 122–176pm lorica length with mean 154±13µm. The results indicated that both fertilized oyster eggs and SS-rotifers were suitable as feed at F1 (first feeding day). However, poor growth was recorded when providing oyster eggs solely for the periods F1–F3. Although growth of larvae at F6 had no difference between the sole SS-rotifers and the oyster eggs additionally provided for Fl–F3, better survival of larvae at F15 was obtained when providing combinations of SS-rotifers with oyster eggs for F1–F3. Besides, better growth and survival of larvae at F15 was found when providing S-rotifers enriched with Kirin yeast for F7–F15. The highest survival and fastest growth of larvae at F15 was found when providing oyster eggs for Fl–F3, SS-rotifers for F1–F6, S-rotifers for F7–F15, both rotifers enriched with Kirin yeast, and Isochrysis for Fl–F15. Total fatty acid (TFA), EPA, DHA content, and DHA/EPA (DIE) ratio of larvae changed with their sizes and corresponded to that of their feeds. The F15 larvae having a higher TFA grew faster, having higher DHA or EPA survived better.
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© 1997 Springer Science+Business Media Dordrecht
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Su, H.M., Su, M.S., Liao, I.C. (1997). Preliminary results of providing various combinations of live foods to grouper (Epinephelus coioides) larvae. In: Hagiwara, A., Snell, T.W., Lubzens, E., Tamaru, C.S. (eds) Live Food in Aquaculture. Developments in Hydrobiology, vol 124. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-2097-7_48
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DOI: https://doi.org/10.1007/978-94-017-2097-7_48
Publisher Name: Springer, Dordrecht
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