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Growth of flounder larvae, Paralichthys olivaceus using enriched rotifer fed with artificial microparticle diets

Cho, Kyung-Jin;Kim, Mi-Ryung;Park, Heum-Gi;Lim, Young Soo;Ra, Chae Hun;Kim, Sung-Koo

  • Received : 2015.01.12
  • Accepted : 2015.01.23
  • Published : 2014.12.31

Abstract

Three types of artificial microparticle diets were developed for rotifer (Brachionus plicatilis) enrichment. The efficacies of enrichment with the artificial diets were evaluated and compared to those with commercial enrichment diets on the growth and survival of flounder larvae. Total lipid content was highest in the rotifer enriched with oil capsule (40.5% in dry weight). The n-3 highly unsaturated fatty acid (n-3 HUFA) content was also highest in the rotifer fed with oil capsule (7.08% in dry weight). The flounder larvae fed on the rotifer enriched with oil capsule showed the highest growth compared to those fed on any other enriched rotifer (P<0.05). The survival ratio of flounder larvae fed on the rotifers enriched with oil capsule and emulsion oil were higher than those fed on any other enriched rotifer (P<0.05). From the feeding study, the growth and survival of flounder larvae were enhanced by feeding rotifer enriched with oil capsule compared to rotifer enriched with any other diets. The rotifer fed on oil capsule containing high contents of n-3 HUFA. Therefore, a significant relationship between the growth and survival of flounder larvae and the n-3 HUFA content of rotifer could be obtained.

Keywords

Artificial microparticle diets;Oil capsule;Rotifer;Enrichment;Flounder larvae

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