Acronym NA
Category
Aquaculture
Title Gentle treatment of salmon lice and AGD by using desalinated seawater in cages Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National Coordinator Andreas Myskja Lien Coordinator email NA
Coordinator institution
NA
Institutions involved
NA
Start year 2016 End year 2020 Funding (€) € 906,250 Website https://prosjektbanken.forskningsradet.no/en/project/FORISS/256318?Kilde=FORISS&distribution=Ar&chart=bar&calcType=funding&Sprak=no&sortBy=date&sortOrder=desc&resultCount=30&offset=0&Organisasjon.3=OXYVISION+AS Summary Freshwater bath treatment of salmon, infected with sea lice and amoebic gill disease (AGD), is currently performed in well boats or whit in a closed tarpaulin. The sea lice treatment is time consuming taking at least 3 hours per cage, not counting for time spent on preparations and handling of fish.
The innovative idea is to form a semi closed treatment area with freshwater produced of desalinated seawater inside the cage that the fish can access through an open gate. Fish that visit the freshwater body regularly treat themselves, which eliminates the need of handling the fish. This concept is inspired by the natural treatment effect experienced by wild salmon that migrates up rivers to spawn.
Methods for "voluntary behavioural manipulation" of fish will be investigated to be able to control the treatment. This can be achieved by exploiting environmental preferences of salmon in terms of optimising surrounding light, temperature and access to feed.
The desalination process does not change the water temperature, which makes it possible to produce freshwater with a favourable temperature if seawater can be accessed from several depths. A depth-adjustable seawater intake for the desalination system will therefore be developed in the project.
It is important to kept the freshwater in the cage free of seawater contamination. However, the fish must have free access to the freshwater volume and the farmer must be able to operate the cages. Customised solutions of enclosures that meets these requirements will be developed in the project.
A system for water treatment will be adapted or develop in the project that can be scaled in accordance to the size of the cage and the bath volume. This will include diffuser based oxygenation of the freshwater and CO2 removal by external pumps and aerators.
To summarise, the innovation consists of new technology and new methods that all together makes up a new type of gentle treatment system for sea lice and AGD.
Keywords
Animal welfare;
Cage aquaculture;
Parasite;
Fish;
Salmon;
Fish health;
Engineering;
Open sea aquaculture;
Marine Region
76
Not associated to marine areas
0
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