전자저널 > 전자저널 > The Effect of Growth and Survival Rate on Feeding Rate of 3-year-old Abalone, Haliotis discus hannai rearing in Net Cage Culture

The Effect of Growth and Survival Rate on Feeding Rate of 3-year-old Abalone, Haliotis discus hannai rearing in Net Cage Culture

Byeong-Hak Kim, Jung Jun Park, Maeng-Hyun Son, Tae-Ik Kim and Si-Woo Lee

Southwest Sea Fisheries Research Institute, NIFS, Yeosu 59780,, Korea Inland Fisheries research Institute, NIFS, Gyeonggi-do 12451, Korea

The effect of different feeding rate on the growth and survival rate of 3-year-old abalone, Haliotis dicsus hannai were investigated in marine net cage culture. Feeding rate is determined that was fed 5, 10, 15 and 20 percentage to abalone at body weight once daily : 5 daily feeding rate (DFR), 10 DFR, 15 DFR and 20 DFR. After that, it was conducted to reared during thirteen month with two replicates in net cage culture. In the growth performance of reared abalone (initial mean shell length 73.77 ± 11.27 mm) in net cage culture, that the absolute growth rate (ARG), daily growth rate (DGR) and specific growth rate (SGR) to the shell length and shell breadth, as well as weight gain (WG), daily weight gain (DWG) and specific weight gain (SWG) to body weight of 5 DFR were higher than those of different groups (P < 0.05). Also, survival rate of all feeding rate groups was not significant, but it was showed bellow 30 percents. Therefore, these results is showed that the daily feeding rate for natural feed of 3-year-old abalones reared in net cage culture should be to supply among five to ten percents.

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