Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Effects of the Different Fish Meal and Wheat Flour Content in Extruded Pellet on the Growth and Apparent Digestibility for Olive Flounder Paralichthys olivaceus

어분 종류 및 소맥분 함량이 다른 배합사료가 넙치 (Paralichthys olivaceus)의 성장과 소화율에 미치는 영향

  • Kim, Kyoung-Duck (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Kim, Dong-Gyu (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Jung, Jae-Hoon (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Kim, Kang-Woong (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Son, Maeng-Hyun (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Lee, Sang-Min (Faculty of Marine Bioscience and Technology, Gangneung-Wonju National University)
  • 김경덕 (국립수산과학원 사료연구센터) ;
  • 김동규 (국립수산과학원 사료연구센터) ;
  • 정재훈 (국립수산과학원 사료연구센터) ;
  • 김강웅 (국립수산과학원 사료연구센터) ;
  • 손맹현 (국립수산과학원 사료연구센터) ;
  • 이상민 (강릉원주대학교 해양생명공학부)
  • Received : 2011.03.15
  • Accepted : 2011.06.08
  • Published : 2011.06.30
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Abstract

A feeding trial was carried out to investigate the effect of different fish meal and wheat flour contents in extruded pellets on the growth and apparent nutrient digestibility of olive flounder Paralichthys olivaceus. Four extruded pellets (HB1, HB1T, HB2 and HB2T) were prepared using two kinds of high quality brown fish meal and low quality tuna fish meal. Two diets (HB1 and HB2) contained two different kinds of brown fish meal, respectively; in HB1T and HB2T, we substituted 50 % of the brown fish meal with 10 % wheat flour. Three replicate groups of fish (initial body weight of 82 g) were fed the experimental pellets to visual satiation for 15 weeks. The highest weight gain was observed in fish fed HB1, and weight gain of fish fed HB2 was significantly higher than that of fish fed HB2T (P<0.05). Feeding efficiency for fish fed HB1 was significantly higher than that of fish fed HB1T and HB2T (P<0.05), but was not significantly different from fish fed HB2. Apparent dry matter digestibility in HB1 and HB2 was significantly higher than in HB1T and HB2T (P<0.05). The highest crude protein digestibility was observed in HB1, and protein digestibility in HB1T and HB2 was higher than in HB2T (P<0.05). The results of this study suggest that fish meal quality considerably affects growth and nutrient digestibility of olive flounder fed extruded pellets, and the use of HB1 is recommended over HB1T, HB2 and HB2T for efficient olive flounder production.

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References

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