Journal of Fisheries and Marine Sciences Education (수산해양교육연구)

The Korean Society for Fisheries and Marine Sciences Education (한국수산해양교육학회)
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Optimum Feeding Rate in Growing Olive Flounder Paralichthys olivaceus Fed Practical Extruded Pellet at Optimum Water Temperature (21℃)

적수온(21℃)에서 사육한 성장기 넙치 (Paralichthys olivaceus)의 배합사료 적정 공급률

  • Received : 2014.06.13
  • Accepted : 2014.07.15
  • Published : 2014.08.31
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Abstract

This study was conducted to investigate the effects of feeding rate on growth performance, blood components and histology of growing olive flounder. The experiment was carried out to determine the optimum feeding rate of the fish (initial fish mean weight of $97{\pm}3.0$ g) at the optimum water temperature. Two replicated groups of fish were fed commercial diet at the feeding rates of 0, 1.0, 1.65 and 2.3% body weight (BW)/day and satiation. Feeding trial was conducted under a flow-through system with ten 1.2 metric ton aquaria receiving filtered seawater at $21{\pm}2^{\circ}C$ for three weeks. Weight gain and specific growth rate (SGR) for fish fed to satiation were significantly higher than those for the unfed fish and for fish fed at 1.0 and 1.65% BW/day. There were no significant differences in values of such parameters between fish fed at 1.65% and those fed at 2.3% BW/day and between fish fed at 2.3% and those fed to satiation. Weight gain and SGR for the unfed fish were significantly lower than those for fish in the other treatments. All the tissues (hepatopancreas, kidney and anterior intestine) were in good condition in fish fed the experimental diet at different feeding rates. This result indicates that the optimum feeding rates of olive flounder (97-160 g) was approximately 2.52% BW/day at the optimum water temperature.

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References

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  1. Optimum Feeding Rate for Sub-adult Olive Flounder (384 g) Paralichthys olivaceus Fed Practical Extruded Pellets at Optimum Water Temperatures (20-24.5℃) vol.47, pp.5, 2014, https://doi.org/10.5657/KFAS.2014.0582