ISSN : 1225-3480
본 연구는 전복 육상 중간양성 시 생산성과 경제성 향상을 유도하고자 육상 중간양성 방식별로 수용한 전복치패에 배합사료와 해조류를 공급하여 성장 및 생존율을 조사하였다. 실험 전복은 2012년에 종묘생산 된 양성 1년생 (각장 22.74-23.67 mm) 을 사용하여 해조류 (sea weed diet, SW) 와 배합사료 (artificial, A) 공급구에 각각 바닥식 (floor culture, FC), 그물 바닥식 (net floor culture, NFC), 이중 은신처 (double shelter culture, DSC) 그리고 육상 가두리 (indoor net cage culture, INCC) 로 총 8개의 중간양성 방식을 2반복으로 설정하여 10개월간 사육하였다. 월별 각장 절대성장률 (absolute growth rate of shell length, <TEX>$AGR_{SL}$</TEX>), 일간성장률 (daily growth rate of shell length), 중량 변화에서 9월부터 11월 까지를 제외하고 유의적 차이가 없었다. 육상수조 내 사육방법별 월별 중량변화는 유의적 차이가 없었다. 성장에서는 각장, 각폭, 체중에 대한 모든 성장지표에서 유의적 차이는 보이질 않았으나, 배합사료 공급구의 이중쉘터 방식이 높은 값을 보였다. 생존율은 A-FC가 70% 이상으로 55-60%인 다른 실험구보다 유의적으로 높았으며 (P < 0.05), 생사료와 배합사료 공급한 전복치패 가식부의 일반성분은 차이가 없었다. 따라서 2 cm 이상의 전복치패를 육상수조에서 서로 다른 중간 양성 방식별로 사육 시 배합사료와 생사료 공급은 성장차이를 보이지 않으며, 배합사료를 공급한 바닥식 중간양성이 생존율이 높게 나타나, 육상 중간양성 시 바닥식 양성이 생산성 향상에 유리할 것으로 판단된다.
This study was conduct to investigate the effect of intermediate culture types on the growth and survival rate of the juvenile abalone, Haliotis discus hannai fed seaweed and artificial diet. Intermediate cultures were to determine there that was to fed seaweed (SW) of artificial diet (A) of floor culture (FC), net floor culture (NFC), double shelter culture (DSC) and indoor net cage culture (INCC) in land-based tank, in two replicate. In the growth performance of juvenile abalone reared through intermediate culture to fed SW of A, that the absolute growth rate (AGRSL, AGRSB), daily growth rate (DGRSL, DGRSB), and specific growth rate (SGRSL, SGRSB) to the shell length (SL) and shell breadth (SB) of experimental groups were not significant. As weight gain (WG), daily weight gain (DWG) and specific weight gain (SWG) to body weight through intermediate culture types in land-based tank was not significant. However, as to survival rate to experimental groups, A-FC was higher than those of different groups (P < 0.05). Therefore, these results is showed that was not difference to growth of juvenile abalone over 2 cm fed seaweed diet and artificial diet according to intermediate culture types. But floor culture with artificial diet indicate that was highest to survival rate, therefore, it is beneficial for higher productivity in floor culture with artificial diet among intermediate culture types.
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