Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Effect of the Burrowing Substratum on the Growth and Ambicoloration of Juvenile Flounder Paralichthys olivaceus Cultured at High Density

넙치(Paralichthys olivaceus) 치어의 성장 및 양면착색 현상에 있어 잠입기질의 효과

  • Kang, Duk-Young (West Sea Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Kim, Hyo-Chan (West Sea Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Myeong, Jeong-In (National Fisheries Research and Development Institute) ;
  • Min, Byung Hwa (National Fisheries Research and Development Institute)
  • 강덕영 (국립수산과학원 서해수산연구소) ;
  • 김효찬 (국립수산과학원 서해수산연구소) ;
  • 명정인 (국립수산과학원 양식관리과) ;
  • 민병화 (국립수산과학원 양식관리과)
  • Received : 2014.04.14
  • Accepted : 2014.06.24
  • Published : 2014.08.31
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Abstract

To evaluate the influence of burrowing substrate on the rearing performance and ambicoloration of cultured flounder, Paralichthys olivaceus, we compared the daily food intake (DFI), feed efficiency (FE), survival, growth, proportion of pigmented skin on the blind side, and proportion of ambicolored fish. We reared juvenile flounders [total length (TL) $4.46{\pm}0.06cm$, body weight (BW) $0.77{\pm}0.03g$] in dark-green fiberglass-reinforced plastic (FRP) aquariums without (control) or with gravel substrate at a density of 200 fishes/ton for 120 days. While there was no difference in survival rate or growth, the DFI was lower and FE higher in the group raised with substrate than in the control. The proportions of pigmented area on the blind side and ambicolored fish were significantly higher in the control tank. Therefore, the supplement of substrate on the aquarium bottom positively affects the feeding efficiency, and inhibits abnormal pigmentation on the blind side in flounder farming at high density.

Keywords

References

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