Journal of Aquaculture (한국양식학회지)

The Korean Society of Fisheries and Aquatic Science (한국양식학회)
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Seedling Production of the Pacific Bluefin Tuna Thunnus orientalis

참다랑어 Thunnus orientalis의 종묘생산과 치어의 적정 사육수조 및 단백원 검토

  • Ji, Seung-Cheol (Jeju Sea Fisheries Research Institute, National Fisheries Research & Development Institute) ;
  • Takaoka, Osamu (Fisheries Laboratory, Kinki University) ;
  • Takii, Kenji (Fisheries Laboratory, Kinki University) ;
  • Jeong, Gwan-Sik (Chonnam National University of College Fisheries and Ocean Science) ;
  • Han, Seock-Jung (Jeju Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
  • Published : 2008.11.25
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Abstract

We investigated the growth and survival in seedling production, and growth performance was compared with the different rearing tanks and protein source of formulated feed for juvenile Pacific bluefin tuna Thunnus orientalis (PBT). The survival rate at the end of nursery culture at 30 days after hatching was $0.69{\pm}0.40%$, and total length and mean body weight were $49.83{\pm}2.52\;mm$ and $1.03{\pm}0.09\;g$, respectively. Growth performance has no significant difference in fish reared by different tanks forms for 10 days. In order to develop an artificial diet, we evaluated the dietary utility of enzyme treated fish meal (Bio-CP, BIO) for juvenile PBT. Only diet BIO sustained similar growth and higher feed efficiency, and final carcass lipid content as compared to those of Sand lance (SL) These results revealed that BIO-CP a suitable dietary protein source, could sustain growth of PBT.

참다랑어 Thunnus orientalis의 종묘생산기술개발을 위해 대량 종묘 생산과정에서의 성장과 생존, 사육수조와 배합사료의 단백질원의 차이에 따른 성장효과 대하여 조사하였다. 종묘생산 실험 결과 부화 후 30일째의 생존율은 0.69%, 전장과 평균체중은 각각 $49.83{\pm}2.52\;mm$, $1.03{\pm}0.09\;g$이었다. 사육수조 형태 차이에 따른 사육실험 결과, 성장률, 사료효율, 생존율 등 사육성적의 실험구간의 유의차는 없었다. 참다랑어 치어의 배합사료 개발을 위한 적정 단백원 평가에서 BIO구가 실험 종료시의 평균 체중과 성장률에서 SL구와 유의차를 보이지 않았으며, 사료효율과 실험 종료시의 전어체 조지방 함량은 BIO구가 SL구보다 유의적으로 높았다(P<0.05). 본 연구결과 BIO-CP가 참다랑어 치어용 배합사료의 적정 단백원으로 평가되었다.

Keywords

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