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ISSN : 1225-3480

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30권 3호

해상가두리 및 실내 육상수조에서 먹이 공급비율에 따른 북방전복, Haliotis discus hannai의 성장 및 생존율

The Effect of Growth and Survival Rate on Feeding Rate of Abalone, Haliotis discus hannai, Rearing in Net Cage Culture or Indoor Tank Culture

김병학 (국립수산과학원 남서해수산연구소)
박민우 (국립수산과학원 남서해수산연구소)
김태익 (국립수산과학원 남서해수산연구소)
손맹현 (국립수산과학원 남서해수산연구소)
이시우 (국립수산과학원 남서해수산연구소)
한국패류학회지 / The Korean Journal of Malacology, (P)1225-3480;
2014, v.30 no.3, pp.227-234
https://doi.org/10.9710/kjm.2014.30.3.227
김병학, 박민우, 김태익, 손맹현, & 이시우. (2014). 해상가두리 및 실내 육상수조에서 먹이 공급비율에 따른 북방전복, Haliotis discus hannai의 성장 및 생존율. , 30(3), 227-234, https://doi.org/10.9710/kjm.2014.30.3.227

초록

본 연구는 해상가두리의 먹이공급비율에 따른 성장 및 생존율을 조사하고, 실내육상양식의 먹이 공급율과의 비교를 통해 국내 주요 북방전복 양성방법인 해상가두리와 함께 실내 사육 수조의 적정 천연먹이의 공급율을 제안하여 북방전복 생산성 향상을 유도하고자 실시하였다. 먹이공급율은 전복 어체중량을 기준으로 일간공급율 (daily feeding rate, DFR) 5, 10, 15, 20% (5DFR, 10DFR, 15DFR, 20DFR) 를 설정하여, 해상가두리와 실내육상수조에서 2반복으로 13개월간 실시하였다. 해상가두리에서 사육한 전복 (최초 수용 시 평균각장 $54.18{\pm}7.39mm$) 성장에서 각 장과 각폭의 절대성장율 (absolute growth rate, ARG), 일간 성장율 (daily growth rate, DGR) 및 특수생장율 (specific growth rate, SGR) 과 중량의 증중률 (weight gain, WG), 일간증중률 (daily weight gain, DWG) 및 특수증중률(specific weight gain, SWG), 그리고 생존율에서 20DFR이 유의적으로 낮았다 (P < 0.05). 실내육상수조에서 사육한 전복 (최초 수용 시 평균각장 $49.70{\pm}2.28mm$) 의 각장, 각폭의 ARG, DGR, SGR과 중량의 WG, DWG, SWG에서는 5DFR, 10DFR이 유의적으로 높았고 (P < 0.05), 생존율은 20DFR이 유의적으로 낮았다 (P < 0.05). 따라서 해상가두리와 실내육상수조 전복양식 자연먹이의 일간 공급율은 성장과 생존율, 그리고 경제적 측면까지 고려하면 어체중량의 5-10%에서 공급해야 한다.

keywords
Abalone, Haliotis discus hannai, feeding rate, growth, survival rate

Abstract

The effect of different feeding rate on the growth and survival rate of the abalone, Haliotis discus hannai, were investigated in marine net cage culture and indoor tank 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), 10DFR, 15DFR and 20DFR. After that, it was conducted to reared during thirteen month with two replicates in net-cage culture and indoor tank culture. In the growth performance of reared abalone (initial mean shell length $54.18{\pm}7.39mm$) 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 20DFR were lower than those of different groups (P < 0.05). Also, survival rates of 20DFR was lower than those of different groups (P < 0.05). In the growth performance of reared abalone (initial mean shell length $49.70{\pm}2.28mm$) in indoor tank culture, that the ARG, DGR and SGR to the shell length and shell breadth, as well as WG, DWG and SWG to body weight of 5DFR and 10DFR were lower than those of different groups (P < 0.05). And also, survival rates of 20DFR was lower than those of different groups (P < 0.05). Therefore, these results is showed that the daily feeding rate for natural feed in net-cage culture and indoor tank culture should be to supply among 5-10 percents, taking into account growth, survival rate and economical efficiency.

keywords
Abalone, Haliotis discus hannai, feeding rate, growth, survival rate

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