• 제목/요약/키워드: haliotis discus hanai

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울산 연안의 전복 방류사업에 대한 경제적 효과분석 (An Analysis on the Economic Effectiveness of Abalone, haliotis discus hanai Releasing Project in the coastal area near Ulsan city)

  • 김광수;황진욱;박현철
    • 수산해양교육연구
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    • 제18권3호
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    • pp.261-271
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    • 2006
  • The present study is aimed at evaluating the economic effectiveness of Abalone, haliotis discus hanai Releasing Project(ARP) conducted in the fishing ground owned by a fishing village in Ulsan, Korea. The results were summarized as follows: First, an average ratio of released abalones in the total landing after releasing is shown to be 85.0%. Second, the recapture rate of released abalones is 46.8%, exceeding the recapture rate of BEP(Break-Even-Point), 22.9%. Third, it is evaluated that total economic effectiveness of the ARP is 6.7-6.8 times, net effectiveness is 2.2-2.3 times, and the NPV(Net Present Value) discounted by a 8% interest rate is 474, 635 thousand wons, indicating the project is profitable. Considerable parts of the positive results on the ARP are based on some beneficial conditions, including the selection of favorable releasing sites, best self-regulation system of a fishing village for preservation of seaweed facilities and continued activities for protecting small abalones and their rearing. These results imply that the success of the ARP would be primarily dependent upon the selection of releasing site and effective management system after releasing.

참전복 배합사료의 첨가제로서 Kluyeromyces fragilis, Candida utilis, 빵효모 및 맥주효모의 이용성 (Utilization of Supplemental Kluyveromyces fragilis, Candida utilis, Saccharomyces cerevisiae or Brewer제s Yeast in the Formulated Diets for Juvenile Abalone (Halioties discus hannai))

  • 이상민;김동주;김중균;이종관;박상언
    • 한국양식학회지
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    • 제13권1호
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    • pp.55-62
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    • 2000
  • 첨가제로 맥주효모와 세포외벽을 화학처리 (protoplasted)한 것과 하지 않은 K. fragilism, C. utilis 및 빵효모를 각각 3%씩 배합사료에 첨가하여 평균체중 210mg 전후의 참전복 치패를 10주간 사육 실험한 결과, 생존율은 사료의 효모 종류 및 외벽처리에 따른 유의한 차이는 없었으며, 상품 사료와도 차이가 없었다(P>0.05). 평균증중량 및 가식부 중량은 protoplasted K. fragilis 첨가구가 대조구, 빵효모 및 맥주효모 처리구보다 유의하게 높은 값을 보였으며 (P<0.05), rm 외 실험구들은 실험구간에 차이가 없었다 (P>0.05). 최종 평균 각장은 protoplasted K. fragilis 첨가구가 대조구, 빵효모 및 상품사료보다 유의하게 높은 값을 나타내었으며 (P<0.05), 그 외 실험구들은 차이를 보이지 않았다. 가식부의 수분, 단백질, 지질 및 회분 함량은 실험구간에 유의차는 없었다. (P<0.05).

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