Effects of Feeding Rate on Growth and Body Composition of Adult Flounder Paralichthys olivaceus During the Summer Season

사료급이율이 여름철에 사육된 넙치 성어의 성장 및 체조성에 미치는 영향

  • Kim, Kyoung-Duck (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Kang, Yong-Jin (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • LeeMoon, Jong-Yun (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Kim, Kang-Woong (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Lee, Hae-Young (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Jang, Mi-Soon (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Choi, Se-Min (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Nam, Myung-Mo (East Sea Mariculture 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) ;
  • 김강웅 (국립수산과학원 양식사료연구센터) ;
  • 이해영 (국립수산과학원 양식사료연구센터) ;
  • 장미순 (국립수산과학원 양식사료연구센터) ;
  • 최세민 (국립수산과학원 양식사료연구센터) ;
  • 남명모 (동해특성화연구센터) ;
  • 이상민 (강릉대학교 해양생명공학부)
  • Published : 2009.02.25

Abstract

A 10-week feeding trial was conducted to investigate the effects of feeding rate on growth and body composition of adult flounder during the summer season. Three replicated groups of the fish (initial mean weight of $535{\pm}4.1\;g$) were hand-fed a extruded diet twice a day at the different feeding rates of satiation (100%), 90%, 80% and 70% of satiation for 10 weeks. Mean Water temperature was $19.2{\pm}2.8^{\circ}C$ during the feeding trial. Weight gain and condition factor increased significantly with increase in daily feeding rate (P<0.05), but there was no significant difference in weight gain of fish fed the diet between 100% and 90% of satiation. Survival and feed efficiency were not significantly different among all groups. Proximate composition of dorsal muscle was not significantly affected by feeding rate. Based on the results of this study, optimum feeding rate for growth and condition factor of adult flounder (535-928 g) seemed to be 90% of satiation.

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