해수 순환 여과 사육 시스템에서 넙치 사육 시험
Culture of the Olive Flounder, Paralichthys olivaceus in a Marine Recirculating System
0
조회
0
다운로드
0
인용
0
참고문헌
초록
침지식 해수 순환 여과 사육 시스템에서 여과조 숙성과 넙치의 성장을 조사하였다. 생물 여과조가 숙성되는데 60일이 소요되었다. 사육 기간 중 수온은 17.5～25.1℃, 염분은 30.1～33.5ppt, 용존산소는 7.25～10.49ppm, pH는 8.1～7.5를 유지하였다. 사육수는 매일 5% 범위에서 환수하였으며 사육수의 암모니아성 질소 및 아질산성 질소 농도는 각각 0.096～0.315㎎/L 및 0.015～0.504㎎/L이었으나, 질산성 질소는 질산화 과정이 지속되어 그 농도가 2.530㎎/L에서 39.517㎎/L까지 증가하였다. 사료 효율은 64.1～69.8% 이었고, 사육 밀도는 시험 종료 시 15.9㎏/m2이었다. 사육기간 중 Vibrio spp.는 검출되었으나 질병 발생에 의한 폐사는 없었으며 생존율은 97.1%를 나타내었다.
Abstract
Bio-secure culture of olive flounder Paralichthys olivaceus in the IBK (Intensive Bioproduction Korean) recirculating system with dry pellet was tested for 6 months. The IBK system consists of 12 rearing tanks, 6 sedimentation tanks. 4-sectioned submerged biofilter chamber and channels. The size of each rearing tank was 3m in diameter and 1m in depth. The size of each biofilter chamber was 3.1×3.3×2.0m (D) and was filled with corrugated plastic plates as a biofilter medium. Total surface area of the biofilter was 3,789.7㎡. Water was circulated by one of two vertical axial pump and circulating rate was about 34 times per day. A UV light sterilizer was used to treat inlet sea water with the flow rate of 4 ton/hr. All fish were treated with 150ppm formalin 3 times with 5-day interval before stocking.It took 60 days for "conditioning" the biofilter with the stocking density of 4.5㎏ of fish per ㎡. The concentrations of ammonium-nitrogen, nitrite-nitrogen and nitrate-nitrogen in the system remained at the range of 0.096～0.315㎎/L, 0.015 ～0.504㎎/L, and 2.530～39.517㎎/L, respectively. Water temperature fluctuated from 17.5 to 25.1℃ and salinity was from 30.1 to 33.5ppt during rearing period. The fish grew from the average weight of 615.2g to 1,201.1g for 180 days. Initial and final fish densities were 8.4 and 15.9kg/㎡. Survival rate was 97.1%. Neither parasites nor noticeable diseases was observed during the raring period even Vibrio spp. were detected from some fish in the system.
참고문헌 (12)
- "순환 여과식 양식 산업의 개발", 81, pp.181~186 (1996)
- "순환 여과식 양어 시설의 발전 방향", pp.1~27 (1997), 부경대학교 해양산업개발연구소ㆍ농림수산기술 관리센타
- "반폐쇄식 순환 여과 사육 시스템에서의 넙치(Paralichthys olivaceus) 양식", 28(4), pp.457~468 (1995)
- "침지식 순환여과 사육시스템에서 조피볼락의 양식을 위한 적정 해수 교환량", 55, pp.51~60 (1999)
- "For the Examination of Water and Wastewater" (1989)
- "Rapid start-up of a biological filter in a closed aquaculture systems", pp.85~88 (1977)
- "Journal of the Water Pollution Control Federation" (1928)
- "Soil nitrifying enrichments as biofilter starters in intensive recirculating saline water aquaculture", 223, pp.51~62 (2003)
- "Water control by filteration in closed culture systems", 4, pp.369~385 (1974)
- "Fundamental study on the culture of plaice Paralichthys olivaceus Effect of water temperature condition on the growth of young fish", pp.127~131 (1984)
- "Diseases encountered in rainbow trout cultured in recirculating system Annual Review of Fish Diseases", 6, pp.65~92 (1996)
- "Flounder culture and its challengers in Asia", 10, pp.421~432 (2002)