Journal of Aquaculture (한국양식학회지)

The Korean Society of Fisheries and Aquatic Science (한국양식학회)
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Evaluation of Extruded Pellets and Raw Fish-Based Moist Pellet for Growth of Sub-Adult Flounder Paralichthys olivaceus

미성어기 넙치 사육을 위한 배합사료 및 습사료의 효과 비교

  • Kim, Kyoung-Duck (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Kang, Yong-Jin (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Lee, Jong-Yun (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Nam, Myong-Mo (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Kim, Kang-Woong (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Jang, Mi-Soon (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Lee, Sang-Min (Faculty of Marine Bioscience and Technology, Kangnung National University)
  • 김경덕 (국립수산과학원 양식사료연구센터) ;
  • 강용진 (국립수산과학원 양식사료연구센터) ;
  • 이종윤 (국립수산과학원 양식사료연구센터) ;
  • 남명모 (국립수산과학원 양식사료연구센터) ;
  • 김강웅 (국립수산과학원 양식사료연구센터) ;
  • 장미순 (국립수산과학원 양식사료연구센터) ;
  • 이상민 (강릉대학교 해양생명공학부)
  • Published : 2008.05.25
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Abstract

This study was conducted to evaluate extruded pellets(EP) for the growth of sub-adult flounder Paralichthys olivaceus by comparing with raw fish-based moist pellet(MP). Two replicate groups of 150 fish per each tank(initial mean weight $594{\pm}6.5g$) were fed one of two EPs(EP1 and EP2) and a MP for 32 weeks. Survival was not significantly affected by experimental diets. Final mean weight of fish fed the EP1 was not significantly different from that of fish fed the MP, but that of fish fed EP2 was significantly lower than that of fish fed EP1 and MP (P<0.05). Feed efficiency and protein efficiency ratio of fish fed the EP1 and EP2 were significantly higher than those of fish fed MP(P<0.05). Daily feed intake of fish fed the EPs was significantly lower than that of fish fed MP(P<0.05). Condition factor was not significantly different among all groups. The contents of moisture, crude protein and lipid in dorsal muscle were significantly affected by experimental diets(P<0.05). Based on the results of this study, the dietary formulations used in EP1 and EP2 could be applied in the practical extruded pellet feeds for sub-adult flounder(594-1,126 g).

본 연구는 미성어기 넙치 사육용으로 부상배합사료를 제조하여 습사료와 그 효능을 비교함으로써 넙치 배합사료 개발을 위한 자료를 제공하고자 수행되었다. 최초 평균체중 594g의 실험어를 6개의 15톤 수조에 150마리씩 사료별 2반복으로 수용하여, 실험 부상배합사료 2종류와 습사료를 1일 2회 만복으로 공급하며 32주간 사육하였다. 사육기간 동안의 평균수온은 $13.2{\pm}4.0^{\circ}C$였다. 생존율은 실험구 간에 유의한 차이가 없었다. 최종체중은 MP 실험구가 EP1과는 차이가 없었으나, EP2 보다는 높았다. 사료효율은 MP 실험구가 EP 실험구보다 낮았으며, 사료섭취율은 MP가 EP 실험구보다 높았다. 실험어의 비만도는 모든 실험구 간에 차이가 없었다. 사육실험 종료 후, 실험어 등근육의 수분, 조단백질 및 조지질 함량은 실험사료에 유의한 영향을 받았다. 이상의 결과로부터, 본 연구에 사용된 EP의 사료조성은 미성어기에서 상품크기의 넙치 사육을 위한 MP 대체 배합사료 개발에 도움이 될 것으로 판단된다.

Keywords

References

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