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NTIS 바로가기한국수산과학회지 = Korean journal of fisheries and aquatic sciences, v.53 no.5, 2020년, pp.733 - 739
오민혁 (군산대학교 해양생명과학과) , 김준영 (군산대학교 해양생명과학과) , 김석렬 (서해수산연구소 양식산업과) , 김수경 (서해수산연구소 양식산업과) , 김준환 (서해수산연구소 양식산업과)
Olive flounder Paralichthys olivaceus (total weight 216.4±14.6 g, total length 28.4±1.7 cm) were exposed to different pH levels (3, 4, 5, 6, 7, 8, and 9) for 96 h. At pH 4, hemoglobin decreased significantly, while plasma calcium, glucose, cholesterol, and ALP increased significantly. ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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pH는 7을 기준으로 어떻게 구분되는가? | 수중의 수소이온농도를 나타내는 지표로서 pH는 질소대사과정 후 배출되어 이온화된 NH4+가 NH3로 변하는 과정에서 방출되는 H+에 의하여 pH가 낮아지며, 양식장에서 조류 및 식물, 세균에 의한 광합성 작용으로 수중의 CO₂ 및 alkaline과 같은 화학성분의 상호작용을 통해 pH는 상승한다(Wurts, 2003). pH는 7을 기준으로 알칼리성과 산성으로 구분되는데, 일반적인 어류의 사육 pH 범위는 6.5-9. | |
넙치 육상 양식장의 pH는 무엇에 의해 pH 6 이하로 내려갈 수 있나? | 일반적인 넙치 육상 양식장의 pH는 7-8 수준으로 유지 운영된다. 하지만, 특정 친환경양식시스템인 바이오플락 및 순환여과시스템에서는 암모니아 질산화 과정에 의해 pH가 꾸준히 감소하여 pH 6 이하로 내려갈 수도 있다. pH의 급격한 변화는 양식 생물에게 독성으로 영향을 미칠 수 있어, 사육 양성에 필요한 생물의 적정 pH 범위의 기준 지표가 필요하다(Ip et al. | |
일반적인 어류의 사육 pH 범위는 어떻게 되는가? | 수중의 수소이온농도를 나타내는 지표로서 pH는 질소대사과정 후 배출되어 이온화된 NH4+가 NH3로 변하는 과정에서 방출되는 H+에 의하여 pH가 낮아지며, 양식장에서 조류 및 식물, 세균에 의한 광합성 작용으로 수중의 CO₂ 및 alkaline과 같은 화학성분의 상호작용을 통해 pH는 상승한다(Wurts, 2003). pH는 7을 기준으로 알칼리성과 산성으로 구분되는데, 일반적인 어류의 사육 pH 범위는 6.5-9.0 (약산성-약알칼리성)이고, 평균 혈중 pH는 7.4으로 중성이다(Wurts, 2003). |
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