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Daily feeding Rates of Parrot Fish Oplegnathus fasciatus Fed Extruded Pellet at the Different Water Temperatures  

Kim, Kyong-Min (Jeju Fisheries Research institute, National Fisheries Research & Development Institute)
Lee, Jung-Uie (Jeju Fisheries Research institute, National Fisheries Research & Development Institute)
Kim, Jae-Woo (Jeju Fisheries Research institute, National Fisheries Research & Development Institute)
Han, Seok-Jung (Jeju Fisheries Research institute, National Fisheries Research & Development Institute)
Kim, Kyoung-Duck (Aquafeed Research Center, National Fisheries Research & Development Institute)
Jo, Jae-Yoon (Department of Aquaculture, Pukyong National University)
Publication Information
Journal of Aquaculture / v.21, no.4, 2008 , pp. 294-298 More about this Journal
Abstract
Daily feeding rates on parrot fish of different body weights (10-30 g, 40-60 g, 70-120 g, 130-240 g, 250-480 g, < 480 g) were investigated under six water temperatures of $15.1^{\circ}C$, $19.2^{\circ}C$, $22.5^{\circ}C$, $23.0^{\circ}C$, $24.7^{\circ}C$ and $26.5^{\circ}C$. The lowest and highest daily feed intakes (%/body weight/day) of the smallest fish group (10-30 g) were 2.24% and 6.04% at $15.1^{\circ}C$ and $24.7^{\circ}C$ temperatures, respectively. Daily feed intakes of 40-60 g fish group were recorded as 1.14% and 3.85% at 15.1 and 24.7, respectively. But, feed intake of bigger group (250-480 g) were 0.48% and 2.06% under $15.1^{\circ}C$ and $26.5^{\circ}C$, and these values were relatively lower than those of smaller fish groups. Daily feeding intakes of parrot fish fed extruded pellet tended to decrease when fish weight increased and water temperature decreased.
Keywords
Parrot fish; Feeding rate; Extruded pellet;
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