Recirculating Aquaculture Systems (RAS) analysis – Main issues on management and future challenges 2012

Abstract:

The main issues for Recirculating Aquaculture Systems (RAS) are analyzed, in order to lead to better solutions for future managers, identifying possible areas for improvements and future challenges for the industry. RAS-based production companies, researchers, system suppliers and consultants were inter- viewed separately, in order to gain an overall understanding of those systems and what developments could assist, in a positive way. Answers and subsequent analysis identified as significant barriers: poor participation by the producers; a disincentive on sharing information; and a lack of communication between different parties. The main issues are poor designs of the systems, as many had been modified after a previous approach was unsuitable; and their poor management, due mainly to an absence of skilled people taking responsibility for water quality and mechanical problems. As RAS will play an important role within the future of aquaculture, their enhancement is needed. Key priorities are the necessity to improve equipment performance, through researching at a commercial scale and further work on the best combinations of devices for each particular situation. Additional recommendations are for a spe- cialized platform, to share knowledge on RAS, together with a more indepth and distinctive education programme.

© 2012 Elsevier B.V. All rights reserved.

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Current Status on Profits in Recirculating Systems Patrick D. O’Rourke  – Illinois State University  – Normal, Illinois

Conclusion

The author reported some the limited publicly available economic data on commercial recirculating aquaculture systems. There are indications, not covered in this paper, that technological and biological advances and the expected increased demand for high quality fish products will improve the potential for economically viable recirculating systems.

The net present value method of evaluating capital investment opportunities was described and illustrated. It is suggested that it is the preferred criteria for making capital investment decisions. This approach may be helpful for those individuals who are faced with making such decisions now. Caution and rigorous analysis of investment opportunities in commercial recirculating aquaculture systems is suggested.

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