한국양식학회지 (Journal of Aquaculture)

한국양식학회 (The Korean Society of Fisheries and Aquatic Science)
권호 표지

배합사료의 단백질 및 지질 함량이 어린 돌기해삼 Stichopus japonicus의 성장 및 체조성에 미치는 영향

Effects of Dietary Protein and Lipid Levels on Growth and Body Composition of Juvenile Sea Cucumber Stichopus japonicus

  • 서주영 (강릉대학교 해양생명공학부) ;
  • 최진 (강릉대학교 해양생물교육연구센터) ;
  • 김근업 (강원도수산자원연구소) ;
  • 조성수 (강원도수산자원연구소) ;
  • 박흠기 (강릉대학교 해양생명공학부) ;
  • 이상민 (강릉대학교 해양생명공학부)
  • Seo, Joo-Young (Faculty of Marine Bioscience and Technology, Kangnung National University) ;
  • Choi, Jin (Marine Biology Center for Education and Research, Kangnung National University) ;
  • Kim, Guen-Up (Gangwon Province Fisheries Resources Institute) ;
  • Cho, Sung-Su (Gangwon Province Fisheries Resources Institute) ;
  • Park, Heum-Gi (Faculty of Marine Bioscience and Technology, Kangnung National University) ;
  • Lee, Sang-Min (Faculty of Marine Bioscience and Technology, Kangnung National University)
  • 발행 : 2008.02.25
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초록

본 연구는 어린 돌기해삼 Stichopus japonicus 사료의 적정 단백질과 지질 함량을 조사하기 위해 단백질(10%, 20%, 30% 및 40%)과 지질(3%, 7% 및 11%)이 달리 함유된 12 종류의 실험사료를 제조하였다. 평균 체중 1.1 g의 치삼을 각 수조마다 50마리씩 3반복으로 수용하여 8주간 수행하였다. 사육실험 종료 후, 생존율은 86% 이상으로 실험구간에 유의한 차이가 없었다(P>0.05). 증중율과 일간성장율은 동일한 지질함량에서 단백질 30%에 지질 3% 함유 사료 공급구가 다른 실험구에 비해 유의하게 높은 값을 나타내었다(P<0.05). 치삼의 수분, 지질 및 회분 함량은 사료의 단백질과 지질함량에 따른 차이를 보이지 않았으나, 단백질함량은 실험구간에 유의한 차이를 보였으며(P<0.05), 단백질 30%에 지질 3% 함유 사료 공급구에서 가장 높게 나타났고, 단백질 20%에 지질 11% 공급구에서 가장 낮았다. 지방산 조성은 사료의 지방산에 영향을 받아 지질함량이 증가함에 따라 18:2n-6은 증가하였고 n-3HUFA는 감소하는 경향을 보였다. 이상의 결과로부터, 해삼의 최대 성장에 필요한 단백질함량은 30%이고, 지질함량은 3%로 판단된다.

We investigated the proper dietary protein and lipid levels for growth and body composition of juvenile sea cucumber Stichopus japonicus. Three replicate groups of the sea cucumber(average weight of 1.1 g) were fed the experimental diets containing different levels of protein(10, 20, 30 and 40%) and lipid(3, 7 and 11%) for 10 weeks. At the end of the feeding trial, survival of each group was over 87%, and there was no significant difference among the groups. Weight gain and specific growth rate(SGR) of sea cucumber were significantly affected by dietary protein(P<0.005) and lipid levels(P<0.001). The highest weight gain and SGR were observed when sea cucumber fed the diet containing 30% protein with 3% lipid(P<0.05). Weight gain and SGR of the sea cucumber fed the diet containing 3% lipid were higher than the other groups at the same protein level except for 40% protein group(P<0.05). Protein content of the sea cucumber fed the diet containing 30% protein with 3% lipid was significantly (P<0.05) higher than those fed 20% protein diets with 7% or 11% lipids and 10% protein diet with 7% lipid. Moisture, lipid and ash contents of the whole body were not significantly different among the groups. Fatty acid compositions such as linoleic acid, EPA(20:5n-3) and DHA(22:6n-3) of the whole body were affected by those of dietary lipid sources. The results of this study indicate that the diet containing 30% protein and 3% lipid is optimal for growth of juvenile sea cucumber.

키워드

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