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고수온에서 사육한 성장기 및 미성어기 넙치(Paralichthys olivaceus)의배합사료 적정 공급률
김성삼 ( Sungsam Kim ),김강웅 ( Kangwoong Kim ),김경덕 ( Kyoungduck Kim ),이봉주 ( Bongjoo Lee ),한현섭 ( Hyonsob Han ),이경준 ( Kyeongjun Lee ) 한국수산과학회(구 한국수산학회) 2015 한국수산과학회지 Vol.48 No.5
We investigated the effects of feeding rate on the growth performance of growing and sub-adult olive flounder Paralichthys olivaceus, and the optimum feeding rate at high water temperature (25-31°C). In experiment I, two replicated groups of fish (113 g) were fed a commercial diet (CD) at rates of 0, 0.7, 1.2, 1.7, 2.2, and 2.4% (satiation) body weight (BW) per day for 4 weeks. In experiment II, two replicated groups of fish (313 g) were fed a CD feeding rates of 0, 0.3, 0.5, 0.7, 0.9, and 1.0% (satiation) BW per day for 4 weeks. In experiment I, the weight gain (WG) and specific growth rate (SGR) of fish fed at 0.7 and 0.9% BW per day was significantly higher than that of unfed fish (0%) and fish fed at 0.3, 0.5, and 1.0% (satiation) BW per day. In experiment II, the WG and SGR increased significantly as feeding rate increased from 0 to 2.2% BW per day, but decreased in the satiation group (2.4%). Broken-line regression analysis of WG showed that the optimum feeding rate of growing and sub-adult olive flounder were 1.98% and 0.55% BW per day, respectively, at the high water temperature.