Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Effects of Feeding Rate and Frequency on the Winter Growth and Body Composition of Olive Flounder, Paralichthys olivaceus

배합사료 공급율 및 공급횟수가 겨울철에 사육된 육성기 넙치의 성장 및 체조성에 미치는 영향

  • Kim, Kyoung-Duck (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Nam, Myung-Mo (East Sea Mariculture Research Center, National Fisheries Research & Development Institute) ;
  • Kim, Kang-Woong (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Kim, Dong-Gyu (Aquafeed Research Center, National Fisheries Research & Development Institute) ;
  • Son, Maeng-Hyun (Aquafeed Research Center, National Fisheries Research & Development Institute)
  • 김경덕 (국립수산과학원 사료연구센터) ;
  • 남명모 (동해수산연구소) ;
  • 김강웅 (국립수산과학원 사료연구센터) ;
  • 김동규 (국립수산과학원 사료연구센터) ;
  • 손맹현 (국립수산과학원 사료연구센터)
  • Received : 2010.03.23
  • Accepted : 2010.06.10
  • Published : 2010.06.30
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Abstract

Two 15-week feeding trials were conducted to investigate how the rate and frequency of feeding affected the winter growth of olive flounder ($13^{\circ}C$). In the first experiment, triplicate groups of fish (initial mean weight $117{\pm}6.0$ g) were fed extruded pellets twice a day at feeding rates of 0.1, 0.25, 0.4, 0.55, and 0.57% (satiation) body weight per day (BW/d). The weight gain, specific growth rate, and feed efficiency increased significantly (P<0.05) with the feeding rates from 0.1 to 0.55% BW/d, but no significant differences in these parameters were found for fish fed diets of 0.55% BW/d and satiation. The moisture and ash contents of whole body of fish tended to decrease as the feeding rate increased, but the opposite trend was found for crude lipid content. In the second experiment, triplicate groups of fish (initial mean weight $117{\pm}6.3$ g) were fed extruded pellets to apparent satiation at the three different feeding frequencies: one meal 2 days, one meal a day and two meals a day. The weight gain and specific growth rate of fish fed one meal 2 days were significantly (P<0.05) lower than those of fish fed one or two meals a day, whereas no significant differences in the weight gain and specific growth rate were found between fish fed one and those fed two meals a day. Feed efficiency and condition factor were not significantly affected by feeding frequency. Based on these results, a feeding rate of 0.3% BW/d is recommended as maintenance feeding level, and the optimum feeding frequency is one meal a day with satiation feeding for the growth of olive flounder (117-147 g) during winter ($13^{\circ}C$).

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References

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  2. Comparison of Extruded and Moist Pellets for Whole-body Proximate Composition and Growth Performance of Olive Flounder Paralichthys olivaceus vol.47, pp.6, 2014, https://doi.org/10.5657/KFAS.2014.0810
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