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A guide to recirculation aquaculture: an introduction to the new environmentally friendly and highly productive closed fish farming systems










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    Book (stand-alone)
    A guide to recirculation aquaculture
    An introduction to the new environmentally friendly and highly productive closed fish farming systems
    2022
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    Stringent environmental restrictions to minimize pollution from hatcheries and land-based aquaculture facilities in northern European countries have sparked the rapid technological development, investment and innovation in recirculation systems in many parts of the world. In general, aquaculture production affects the environment, but state-of-the-art recirculation methods reduce this effect considerably compared to traditional ways of farming fish. Recirculation systems thereby offer two immediate advantages: cost effectiveness and reduced environmental impact. Recirculation also secures a higher and more stable aquaculture production with less diseases and better ways to control the hatchery parameters that influence fish growth in aquaculture production systems This development is welcome and fully in line with the FAO Code of Conduct for Responsible Fisheries. This guide focuses on the techniques for the conversion from traditional farming methods to recirculated aquaculture and advises the fish farmers on the pitfalls to be avoided along the way. Key features of the guide are: assists farmers to convert to recirculation aquaculture;
  • introduces the technology and the methods of management;
  • advises on good practise shifting to recirculation aquaculture;
  • specifies running a recirculation system, staff education and training;
  • provides case stories from different recirculation projects.
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    Application of low-cost filtration systems to freshwater prawn culture in Thailand 1979
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    This working paper represents those parts of my consultants' report to FAO, for the period 20 August – 24 September 1979, which relate to the Programme for the Expansion of Freshwater Prawn Farming in Thailand (Project THA/75/008). Full details of all the techniques and units utilised can be found in an earlier report published by the South China Sea Fisheries Programmea. The primary reason for visiting Bangkok was to help in solving problems of unsatisfactory water in Macrobrachium hatchery s ystems. Methods of abstracting pre-filtered sea water from the natural bed were taught and had already been applied before the visit ended. The technique of using both Village Units, for primary filtration, and Mini-Units, for recirculation, in wholly artificial beds, was shown in Chacheongsao: in this case also a permanent source was created and this had been supplying clean water for some four days before the mission ended. Abstraction from insitu beds is clearly impossible on the vast Centr al Plain, where the canal's base usually consists of almost bottomless mud. For the numerous isolated communities who still take much of their household water from these canals it seems that the mini-Unit methods could bring much improved water at minimal cost. Throughout this region there are numerous fish ponds. While it can hardly be economic to filter the whole supply it seems that the general method described below under “Chacheongsao Fisheries Station” could well be used for that part of t he supply needed for the actual hatchery and the early fry stages, as well as for any sensitive species that might be kept.
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    Book (stand-alone)
    Guidelines on Environmental Monitoring for Cage Aquaculture within the Kingdom of Saudi Arabia 2017
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    This document has been prepared based on sound scientific principles and international approaches to monitoring cage aquaculture facilities. In general this is a guide to help support good monitoring practice, with details on what to monitor, parameters to be collected, how data is collected, appropriate ways to process the data and what to do with it once the survey is complete and results available. Such monitoring activity will ensure that cage farms use practices that minimize environmental impacts for the long term sustainability of cage aquaculture within the Kingdom of Saudi Arabia. In this sense the document is for fish farmers and their consultants to ensure a unified process of monitoring using standardized procedures, but is more generally applicable for all stakeholders.
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