한국어류학회지 (Korean Journal of Ichthyology)

  • 제28권3호
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  • Pages.200-206
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  • 2016
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  • 1225-8598(pISSN)
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  • 2288-3371(eISSN)
한국어류학회 (The Ichthyological Society of Korea)
권호 표지

배합사료 종류가 넙치 Paralichthys olivaceus 치어의 성장 및 체성분에 미치는 영향

Effects of Various Diets on Growth and Body Composition of Juvenile Olive Flounder, Paralichthys olivaceus

  • 이해영 (국립수산과학원 동해수산연구소 양식산업과) ;
  • 유해균 (국립수산과학원 동해수산연구소 양식산업과)
  • Moon Lee, HaeYoung (Aquaculture Industry Division, East Sea Fisheries Institute, National Institute of Fisheries Science) ;
  • Yoo, Hae-kyun (Aquaculture Industry Division, East Sea Fisheries Institute, National Institute of Fisheries Science)
  • 투고 : 2016.06.13
  • 심사 : 2016.09.20
  • 발행 : 2016.09.30
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초록

최초체중 (IBW) 29.1 g 넙치 치어를 1종 실험사료 (ED)와 5종 국내 외 상품사료 (CD)로 7주간 사육한 결과 최종체중 (FBW), 증체율 (WG), 사료효율 (FE) 및 전어체 (WB)의 일반 성분 중 수분 및 지질에서는 유의적인 차이가 나타났지만, 생존율 및 WB의 일반성분 중 단백질 및 회분에서는 차이를 나타내지 않았다. 넙치 치어는 사육실험 후에는 먹이 종류에 따라 FBW가 57.7~73.6 g, WG도 93~160%로 실험구간에 유의적인 성장 차이를 나타내었다. FE는 71~121%이었으며 성장과 유사한 경향을 나타내었다. IMCD구에서 73.6 g으로 가장 높은 FBW를 나타내었으며, 다음으로 DCCD구, DECD구 및 IOCD구에서 70.0, 68.4 및 67.8 g이었다. IHCD구에서 61.7 g으로 CD구 중에서는 가장 낮았으며 모든 실험구 중 ED구도 57.7 g로 FBW에서도 가장 낮게 유의적인 차이를 나타내었다. 중간 정도의 단백질 및 지질을 함유한 국외산 M제품 (단백질 55.9%, 지질 12.7% 및 회분 15.5%)에서 가장 높은 성장, FE 및 WB 수분 함량과 가장 낮은 WB 지질 함량을 나타내었다. 하지만, 다양한 먹이인 배합사료 6종류에 따라 넙치 치어의 생존율 및 WB 의 일반성분 중 단백질 및 회분 함량에서는 차이가 없는 것으로 나타났다.

The 7-week feeding experiment was conducted to investigate the effects of one experimental diet (ED) and five different commercial diets (CDs) on growth and body composition of juvenile olive flounder, Paralichthys olivaceus. An ED was formulated to contain 50.0% crude protein (CP) from fishmeal, casein, zein and wheat flour and 15.0% crude lipid (CL) from squid liver oil. Five CDs for seawater fish were two domestic E commercial diet (DECD) and C commercial diet (DCCD), three imported H commercial diet (IHCD), M commercial diet (IMCD) and O commercial diet (IOCD) containing 53.1~58.0% CP and 4.8~12.7% CL, respectively. Each diet was fed to triplicate groups of juvenile olive flounder initially weighing $29.1{\pm}0.8g/fish\;(mean{\pm}SD)$ in a flow-through seawater system with a water temperature of $23.4{\sim}28.0^{\circ}C$. Weight gain (WG) was significantly greatest in fish fed the IMCD; intermediate responses were observed for fish fed the DECD, DCCD, and IOCD, while the IHCD and the ED produced the lowest WG values. Feed efficiencies (FE) were similar to WG excluding fish fed the DCCD; FE was also greatest in fish fed the DCCD. Survival with no significant difference approached 100% for fish fed the all six diets in this experiment. Whole-body crude protein and ash contents were not affected excluding moisture and crude lipid by the different type of diets. Therefore, type of diets appeared to be important factor in influencing WG, FE and whole-body moisture and crude lipid of juvenile olive flounder; the best diet for juvenile olive flounder was determined to be the imported commercial M diets containing intermediate protein (55.9%) and lipid (12.7%) in natural seawater based on highest WG, and FE, respectively. This study indicates that the one commercially formulated diet containing intermediate protein and lipid used in this experiment could be a practical diet for juvenile olive flounder; these differences in growth performance between ED and CDs may be due to different dietary protein and lipid levels.

키워드

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