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Optimum stocking density of juvenile abalone, Haliotis discus hannai in recirculating culture system  

손맹현 (국립수산과학원 동해수산연구소)
조기채 (부안수산종묘시험장)
김경길 (거제수산종묘시험장)
전임기 (남해수산연구소)
Publication Information
Journal of Aquaculture / v.16, no.4, 2003 , pp. 257-261 More about this Journal
Abstract
The effects of different stocking densities on the growth of juvenile abalone, Haliotis discus hannai and water quality in the recirculating system with rotating biological contactor, were assessed. The trials were conducted using total weight 32 g juveniles abalone for 60 days at stocking densities of 5, 10, 15 kg/$m^2$. The animals were fed sufficient amounts of the pellet diet of 30.4% protein during the experimental period. Daily feeding rate (DFR) and survival rate (SR) of 5 kg/$m^2$ showed 0.76% and 85.5% those were not significantly differed 10 kg/$m^2$ showing 0.75% and 96.0% (P>0.05). DFR and SR of 15 kg/$m^2$ showing 0.38% and 31.2% were significantly lower than 5 and 10 kg/m2 (P<0.05). Daily growth rate (DGR) and feed efficiency (FE) showed the highest as 0.19% and 24.2% in 5 kg/$m^2$ the lowest as 0.05% and 14.3% in 15 kg/$m^2$ (P<0.05). According to, these results was an inverse relationship between growth and stocking density. The optimum density of juvenile abalone from this experiment is 5 to 10 kg/$m^2$ in the recirculating system.
Keywords
Haliotis discus hannai; Rotating biological contactor; Optimum stocking density;
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