The Korean Journal of Malacology (한국패류학회지)

The Malacological Society of Korea (한국패류학회)
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Growth Characteristics of Juvenile Abalone, Haliotis discus hannai by Commercial Artificial Diet Feeding rate during the Winter Season in Indoor Tank

동계기간 상업용 배합사료 공급비율에 따른 북방전복, Haliotis discus hannai 치패의 성장특성

  • 김병학 (국립수산과학원 남해수산연구소) ;
  • 박정준 (국립수산과학원 남해수산연구소) ;
  • 손맹현 (국립수산과학원 남해수산연구소) ;
  • 김태익 (국립수산과학원 남해수산연구소) ;
  • 이시우 (국립수산과학원 중앙내수면연구소)
  • Received : 2016.06.01
  • Accepted : 2016.06.30
  • Published : 2016.06.30
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Abstract

This study investigated the growth characteristics of juvenile abalone when has been rearing as other different feed rates by the commercial abalone formulated feed on indoor tank, during the winter period that was maintaining on the low water temperature. Experimental abalones were use to 1 year old (shell length $29.14{\pm}2.56mm$, wet weight $2.9{\pm}0.6g$), and it has cultured at six feeding rate groups (0.75 DFW, 1.50 DFW, 2.25 DFW, 3.00 DFW, 3.75 DFW, 4.5 DFW) that were set up the daily feeding rate about total weight (DFW), and two replicated. The average water temperature in the experiment period was $9.7{\pm}3.27^{\circ}C$. In the monthly change absolute growth rate (AGRSL) and specific growth (SGRSL) of shell length, at January, 3.00 DFW was significantly higher than all feeding rate groups (P < 0.05). And in the monthly change of weight change and weight gain (WG), at March, 3.75DFW was significantly higher than all feeing rate groups (P < 0.05). The growth coefficient of thermal units (TGC) was decreased rapid since January, and 3.75 DFW was show significantly higher than all feeding rate groups (P < 0.05). In monthly change of feed efficiency (FE), at December, the 0.75 DFW was significantly higher than all feeding rate groups (P < 0.05), and in February and March, there was no significant difference between all feeding period. Therefore, In this study, was show that juvenile abalones can do to maintain or increasing from weight to supply commercial artificial diet during winter period when rearing into the indoor tank.

본 연구에서는 육상 수조에서 중간 양성 시 공급되는 상업용 북방전복 배합사료를 저수온이 유지되는 동계기간에 공급량을 다르게 할 시 성장특성을 조사하였다. 실험어는 1년생 전복치패 (평균 각장 $29.14{\pm}2.56mm$, 중량 $2.9{\pm}0.6g$) 를 사용하였으며, 실험구는 총체중에 대한 일일 먹이공급율 (the daily feeding rate about total weight, DFW) 을 각 수조에 수용된 실험전복 치패 (250 마리) 총체중의 0.75%, 1.50%, 2.25%. 3.00%. 3.75%, 4.50%로 공급되도록 총 6개 구간을 설정 (0.75 DFW, 1.50 DFW, 2.25 DFW, 3.00 DFW, 3.75 DFW, 4.5 DFW) 하였으며, 실험구는 모두 2반복으로 실시되었다. 실험기간인 동계기간에 평균수온은 $9.7{\pm}3.27^{\circ}C$이었으며. 월별 각장과 각장 성장률 (AGRSL) 및 순간성장률 (SGRSL) 은 1월에는 1.50 DFW 와 2.25 DFW, 3.75 DFW 가 0.75 DFW, 3.00 DFW 보다 유의적으로 높았으며 (P < 0.05), 월별 체중변화 3월에 3.75 DFW 가 모든 실험구보다 유의적으로 높았고 (P < 0.05), 월별 중중률변화에서는 3.75 DFW 가 실험구보다 0.75 DFW 와 1.50 DFW 보다 유의적으로 높았다 (P < 0.05). 열단위성장계수 (TGC) 에서는 1월부터 급격히 낮아졌으며, 3.75 DFW 가 모든 실험구보다 높은 값을 보였다, 1월에는 3.75 DFW 가 0.75 DFW, 1.50 DFW 보다 높았으며 (P < 0.05), 다른 실험구와 유의적 차이는 없었다. 2월에는 3.75 DFW 가 2.25 DFW, 4.50 DFW 를 제외한 모든 실험구보다 유의적으로 높았고 (P < 0.05), 3월에는 3.75 DFW 가 4.50 DFW 를 제외한 모든 실험구보다 높았다 (P < 0.05). 월별 사료효율에서는 12월에 0.75 DFW 가 모든 실험구보다 유의적으로 높았으나 (P < 0.05), 이후 1월을 제외한 2월과 3월에는 모든 실험구간 유의적 차이는 없었다. 따라서, 본 연구에서는 북방전복 치패를 육상수조에서 동계기간 내 사육 시 상업용 배합사료는 일정량 이상을 공급하는 것이 육중량을 유지 또는 일부 증가시킬 수 있으며, 향후 동계기간의 사료공급율에 따른 육중량의 변화가 수온상승기에 가져올 수 있는 성장 변화를 연결하여 조사할 필요가 있을 것으로 판단된다.

Keywords

References

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