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Compensatory Growth in Juvenile Olive Flounder (Paralichthys olivaceus) in the Spring

  • Cho Sung Hwoan (Uljin Marine Hatchery, National Fisheries Research and Development Institute) ;
  • Lee Jong Kwan (Uljin Marine Hatchery, National Fisheries Research and Development Institute)
  • 발행 : 2002.06.01

초록

A feeding trial was conducted to determine compensatory growth of juvenile olive flounder in the spring. Five treatments of fish with 3 replicates were prepared: the control group fish (C) fed twice daily for 8 weeks, the Sl, S2, S3 and S4 fish fed for 7, 6, 5 and 4 weeks after 1, 2, 3 and 4 weeks of starvation, respectively. Survival of olive flounder was not significantly different among treatments. Weight gain of flounder in S2 was significantly (P<0.05) higher than that of fish in S3 or S4, but not significantly different from that of fish in C or Sl. The poorest weight gain was observed in fish of S4 treatment. Specific growth rate (SGR) for flounder in S2 was significantly (P<0.05) higher than that for fish in C or S4, but not significantly different from that of fish in Sl or S3. Feed intake (g/fish) was proportional to duration of days of feeding except for flounder in S2, but not significantly different among C, Sl or S2. Feed efficiency ratio (FER) and protein efficiency ratio (PER) for flounder in S2 were significantly (P<0.05) higher than for fish in C, but not significantly different from those for fish in Sl, S3 or S4. Hepatosomatic index (HSI) and condition factor (CF) for flounder in Sl, S3 and S4 were not significantly different from those for fish in C, but significantly (P<0.05) lower than S2 except for CF in Sl at the end of the experiment. Proximate composition of the whole body of flounder was not significantly different among treatments. In considering results of the experiment, juvenile olive flounder achieved compensatory growth when properly fed after starved up to 2 weeks in the spring. Compensatory growth of fish was supported by improvement in SGR, FER and PER in fish starved.

키워드

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피인용 문헌

  1. The Effects of Different Feeding Strategies on the Growth of Young Nile tilapia, Oreochromis niloticus L., in a Freshwater Recirculating System during Summer vol.8, pp.1, 2002, https://doi.org/10.5657/fas.2005.8.1.038
  2. Effects of Alternate-Week Feeding Strategies on Growth and Feed Efficiency Ratio of Juvenile Nile Tilapia Oreochromis niloticus in a Recirculating System vol.8, pp.3, 2005, https://doi.org/10.5657/fas.2005.8.3.128
  3. 넙치 Paralichthys olivaceus 치어의 성장과 생존에 미치는 반복적 절식의 영향 vol.41, pp.2, 2002, https://doi.org/10.5657/kfas.2008.41.2.125