Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
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Effect of Light Intensity on Growth, Caudal Fin Shape, Body Composition and Skin Color of River Puffer, Takifugu obscurus

황복 Takifugu obscurus의 성장, 꼬리지느러미 형태, 체조성과 체색에 미치는 조도의 영향

  • Kang, Hee Woong (West Sea Fisheries Research and Development Institute, NFRDI) ;
  • Kang, Duk Young (West Sea Fisheries Research and Development Institute, NFRDI) ;
  • Jo, Ki Chae (West Sea Fisheries Research and Development Institute, NFRDI) ;
  • Lee, Jin Ho (West Sea Fisheries Research and Development Institute, NFRDI) ;
  • Park, Kwang Jae (West Sea Fisheries Research and Development Institute, NFRDI) ;
  • Lim, Chi Won (Biotechnology Research Institute, NFRDI) ;
  • Kim, Gyu Hee (West Sea Fisheries Research and Development Institute, NFRDI)
  • 강희웅 (국립수산과학원 서해수산연구소) ;
  • 강덕영 (국립수산과학원 서해수산연구소) ;
  • 조기채 (국립수산과학원 서해수산연구소) ;
  • 이진호 (국립수산과학원 서해수산연구소) ;
  • 박광재 (국립수산과학원 서해수산연구소) ;
  • 임치원 (국립수산과학원 생명공학연구소) ;
  • 김규희 (국립수산과학원 서해수산연구소)
  • Received : 2007.04.12
  • Accepted : 2007.07.07
  • Published : 2007.09.30
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Abstract

The present experiment was carried out to study the effects of light intensity on growth, survival, caudal fin shape, body composition, skin color and blood component of river puffer, Takifugu obscurus. Four light intensities (0, 500, 1,000, 2,000 lx) were tested in duplicates for 60 days. Specific growth rate (SGR), daily feeding rate (FR) and food coefficient (FC) were reduced following to the decrease of light intensity. However in survival rate there was not significantly different among groups. The damage extent of caudal fin was increased in more strong light intensity. In body composition, moisture and crude protein were only significantly difference according to light intensity. In body color, L and a were the highest in 0 lx. In blood analysis, the content of AST, ALT, GLU significantly increased in more powerful the intensity groups. It is concluded that the supplement of low light intensity (e.g. 0 lx) recommended for the commercial scale aquaculture of river puffer in land-based tank without growth and survival retardation.

본 연구는 육상양식장에서 황복의 조도별 사육실험을 통해 성장, 꼬리지느러미 정상도, 체성분, 체색, 혈액분석 등을 조사하고자 하였다. 조도 0, 500, 1,000, 2,000 lx에서 60일간 사육한 결과, SGR은 0 lx와 2,000 lx구에서 높았으며, FR은 2,000 lx구에서 유의하게 높았다. FC는 0 lx구에서 다른 실험구에 비해 유의하게 낮았으며, 최종 생존율은 전 실험구에서 $92.5{\pm}5.0{\sim}97.5{\pm}2.5%$로 유의차는 나타나지 않았다. 꼬리지느러미 정상도는 0, 500 lx구에서 59.0~63.6%로 저조도에서 양호하였다. 체성분 조성에 있어서는 조도별로 수분과 조단백질이 유의한 차이를 보였으며, 체색은 0 lx구에서 L과 a 값이 가장 높게 나타났다. 혈액분석 결과, 조도가 높아짐에 따라 혈장내 AST, ALT, GLU 농도는 유의하게 증가하였다. 육상양식장에서 황복의 상품성과 스트레스 안정면에서는 고조도보다는 0 lx 전후의 저조도가 적당한 것으로 판단된다.

Keywords

Acknowledgement

Grant : 서해 특산품종 양식산업화 기술개발

Supported by : 국립수산과학원

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