Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Effects of Feeding Frequency on the Optimum Growth of Cherry Salmon, Oncorhynchus masou

산천어 치어의 최적 성장을 위한 적정 사료공급 횟수

  • Seong, Ki-Baik (Yeongdong Inland Fisheries Research Institute, National Fisheries Research and Development Institute) ;
  • Kim, Doo-Ho (Yeongdong Inland Fisheries Research Institute, National Fisheries Research and Development Institute)
  • 성기백 (국립수산과학원 영동내수면연구소) ;
  • 김두호 (국립수산과학원 영동내수면연구소)
  • Published : 2008.10.31
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Abstract

This study determined the optimum feeding frequency for the growth of juvenile cherry salmon (Oncorhynchus masou). Triplicate groups of fish (initial mean weight 19.1 g) were fed extruded pellets at four feeding frequencies for 50 days: once every 2 days, once a day, twice a day, and three times a day. The mean water temperature during the feeding trial was $17.9{\pm}1.59^{\circ}C$. The survival of all groups was 100%. The final fork length of fish fed twice a day was significantly greater than that of the other groups (P<0.05). The weight gain of fish fed two and three times daily was significantly greater than that of fish fed once a day or every 2 days (P<0.05). The daily feed intake increased significantly with feeding frequency (P<0.05), but there was no significant difference in the weight gain of fish fed two or three times a day. The feed efficiency of fish fed once every 2 days was highest (P<0.05), and the feed efficiency of fish fed two or three times a day was significantly higher than that of fish fed once a day (P<0.05). The results of this study indicated that the optimum feeding frequency for the growth of juvenile cherry salmon is twice a day, while the feeding efficiency of fish fed once every 2 days was best.

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References

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