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http://dx.doi.org/10.5657/kfas.2009.42.3.262

Effects of Feeding Rate and Feeding Frequency on Growth and Body Composition of Sub-adult Flounder Paralichthys olivaceus in Suboptimal Water Temperature  

Kim, Kyoung-Duck (Aquafeed Research Center, NFRDL)
Nam, Myung-Mo (East Sea Mariculture Research Center, NFRDL)
Kim, Kang-Woong (Aquafeed Research Center, NFRDL)
Lee, Hae-Young (Aquafeed Research Center, NFRDL)
Hur, Saet-Byeol (Aquafeed Research Center, NFRDL)
Kang, Yong-Jin (Central Inland Fisheries Research Institute, NFRDL)
Son, Maeng-Hyun (Aquafeed Research Center, NFRDL)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.42, no.3, 2009 , pp. 262-267 More about this Journal
Abstract
Two 15-week feeding trials were conducted to investigate feeding rate and feeding frequency for growth of sub-adult flounder in suboptimal water temperature ($12^{\circ}C$). In the first experiment, duplicated groups of fish (initial mean weight of 279 g) were fed a extruded pellet once a day at the different feeding rates of 0.1, 0.15, 0.2, 0.3% body weight per day (BW/d), and satiation (0.32% BW/d). Weight gain and feed efficiency were increased significantly (P<0.05) with increase in feeding rates from 0.1 to 0.3% BW/d, but there were no significant differences in weight gain and feed efficiency of fish fed the diet between 0.3% BW/d and to satiation. Crude protein content of dorsal muscle of fish fed the 0.1% BW/d diet was significantly (P<0.05) lower than that of the other groups. In the second experiment, duplicated groups of fish (initial mean weight of 281 g) were fed to apparent satiation with a extruded pellet at three different feeding frequencies (one meal every two days, one meal a day and two meals a day). Weight gain, feed efficiency and condition factor of fish fed one meal every two days were significantly (P<0.05) lower than those of fish fed one meal and two meals a day, but there were no significant differences in weight gain, feed efficiency and condition factor of fish fed between one meal and two meals a day. Based on the results of this study, optimum feeding frequency is one meal a day with satiation feeding for growth and feed efficiency of sub-adult flounder (270-350 g) in suboptimal water temperature ($12^{\circ}C$).
Keywords
Feeding rate; Feeding frequency; Sub-adult flounder; Growth; Suboptimal water temperature;
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Times Cited By KSCI : 2  (Citation Analysis)
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