Effect of the duration of nutritional enrichment on the fatty acid composition of commonly used rotifers <I>Brachionus plicatilis</I> sp. complex and larviculture performance of red sea bream <I>Pagrus major</I>

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  • 広塩性ツボワムシ類に対する栄養強化時間が脂肪酸組成及びマダイ仔魚飼育成績に与える効果
  • Effect of the duration of nutritional enrichment on the fatty acid composition of commonly used rotifers Brachionus plicatilis sp. complex and larviculture performance of red sea bream Pagrus major

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Abstract

This study aimed to confirm the dietary value of the rotifers Brachionus plicatilis sp. complex enriched for the various durations and the rotifer feeding effect of these rotifers on larviculture performance of red sea bream Pagrus major. S and L type rotifers were used in the enrichment. Rotifers were enriched with Chlorella vulgaris containing n-3 HUFAs for 12 or 24 h (12 h EN, 24 h EN). Rotifers cultured primarily with fed C. vulgaris containing n-3 HUFAs (FEN) were also prepared. In larval rearing of red sea bream, the growth in standard body length during the rearing and the survival rate at 20 days post-hatching (dph) were compared among the feeding conditions of 24 h EN and FEN. EPA and DHA contents of both rotifer species between 12 h and 24 h EN did not differ. In polar lipids of L type rotifers, FEN rotifers included more DHA content than 12 h and 24 h EN rotifers. The survival rate of larvae fed FEN rotifers was significantly higher than 24 h EN rotifer feeding group, and the growth in standard body length of larvae fed FEN group was also faster.

Journal

  • Aquaculture Science

    Aquaculture Science 65 (2), 133-144, 2017-06-20

    Japanese Society for Aquaculture Science

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