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Research Project: Developing and Refining Technologies for Sustainable Fish Growth in Closed Containment Systems

Location: Cool and Cold Water Aquaculture Research

Title: Emerging trends in salmonid RAS - Part II. System enhancements

Author
item Summerfelt, Steven - Freshwater Institute
item Davidson, John - Freshwater Institute
item May, Travis - Freshwater Institute
item Good, Christopher - Freshwater Institute
item Vinci, Brian - Freshwater Institute

Submitted to: Global Aquaculture Advocate
Publication Type: Review Article
Publication Acceptance Date: 4/1/2015
Publication Date: 5/1/2015
Citation: Summerfelt, S.T., Davidson, J., May, T., Good, C., Vinci, B. 2015. Emerging trends in salmonid RAS - Part II. System enhancements. Global Aquaculture Advocate. 18(3):64-65.

Interpretive Summary:

Technical Abstract: Dozens of land-based, closed containment systems are coming on line to produce salmon. New projects are bringing new principles into the salmon industry. Depuration systems maximize the removal of earthy and musty flavors in harvested fish. An emerging trend has been to apply technologies that increase the available oxygen provided to fish while simultaneously improving carbon dioxide removal without creating total gas pressure supersaturation. Industry expansion also hinges upon the development of pollution-mitigating technologies to reduce nutrients in effluents. Increased economies of scale and improved water recirculation technologies have improved RAS economics. RAS have the potential to produce the best survival and most efficient feed conversion, which is near 1:1 with Atlantic salmon. In addition, they provide significant barriers that prevent escapes and potential interactions with wild populations.