한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)

  • 제41권6호
  • /
  • Pages.458-465
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  • 2008
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  • 0374-8111(pISSN)
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  • 2287-8815(eISSN)
한국수산과학회 (The Korean Society of Fisheries and Aquatic Science)
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미더덕 추출물을 첨가한 조피볼락용 사료의 제조

Preparation of Rockfish (Sebastes schlegelii) Feed Fortification with Mideodeok (Styela clava) Extracts

  • ;
  • 윤보영 (경상대학교 해양식품생명공학과/해양산업연구소) ;
  • 강석중 (경상대학교 해양생명과학과) ;
  • 최영준 (경상대학교 해양식품생명공학과/해양산업연구소) ;
  • 최병대 (경상대학교 해양식품생명공학과/해양산업연구소)
  • Palmos, Grace N. (Department of Seafood Science and Technology/Institutue of Marine Industry, Gyeongsang National University) ;
  • Yoon, Bo-Young (Department of Seafood Science and Technology/Institutue of Marine Industry, Gyeongsang National University) ;
  • Kang, Seok-Joong (Department of Marine Life Science, Gyeongsang National University) ;
  • Choi, Yeung-Jun (Department of Seafood Science and Technology/Institutue of Marine Industry, Gyeongsang National University) ;
  • Choi, Byeong-Dae (Department of Seafood Science and Technology/Institutue of Marine Industry, Gyeongsang National University)
  • 발행 : 2008.12.31
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초록

The nutritional contribution of mideodeok extracts (ME) on rockfish (Sebastes schlegelii) feed and fish muscle was investigated. Different concentrations of the ME mixed with commercial diet were fed to mature rockfish for 8 weeks. The lipid and ash contents of the formulated diets were relatively similar to the control diet, while increasing the extract concentration increased the moisture content and decreased the protein contents. Major fatty acid components (C18:1n-9, 16:0, C20:5n-3, C22:6n-3) were of comparable quantity. High presence of C18:2n-6 was attributed to soybean oil incorporated in the diets, while the essential fatty acids were within limits (0.9-1.0%). The diet fortified with 6% ME produced the highest feed efficiency, with increased protein content in the muscle as well as lipid content for both muscle and liver. Hepato- and visceral-somatic index values were elevated with increasing ME concentration Muscle fatty acid contents were mostly C18:1n-9 and C16:0, with low absorption of C18:2n-6 in both the muscle and liver. Total highly unsaturated fatty acid content was significantly reduced in the fish muscle, but the values were higher for fish fed with a ME-fortified diet. An increasing trend for eicosapentaenoic acid and docosahexaenoic acid was also observed with increased ME fortification, with liver levels of these compounds remaining within range throughout the duration of the experiment.

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