dc.contributor.author | Stien, Lars Helge | |
dc.contributor.author | Gytre, Trygve | |
dc.contributor.author | Torgersen, Thomas | |
dc.contributor.author | Sagen, Helge | |
dc.contributor.author | Kristiansen, Tore S. | |
dc.date.accessioned | 2012-02-01T18:38:32Z | |
dc.date.available | 2012-02-01T18:38:32Z | |
dc.date.issued | 2008 | |
dc.identifier.citation | This report is not to be quoted without prior consultation with the General Secretary. | no_NO |
dc.identifier.uri | http://hdl.handle.net/11250/102545 | |
dc.description.abstract | Aquaculture sea cages can now be more than 30 meters deep. It has therefore become next to
impossible for fish farmers to form a complete picture of the welfare situation of the fish. It is
consequently all ]important to develop an automatic system for continuous assessment of fish
welfare in sea cages. One such system under development is the Welfaremeter. The Welfaremeter
consists of a profiling probe (CTD), a control unit, a database, an expert software program and an
internet webpage. The probe measures temperature, oxygen, salinity, fluorescence and turbidity for
each half meter downwards in the cage. The control unit determines how often the probe profiles
the water column and sends the measurement data via the mobile phone network (GPRS) to a
database at The Norwegian Marine Data Centre, Institute of Marine Research. These data are then
analysed by the expert software which gives an evaluation of the environmental conditions in the
cage as either very good, fair or potentially harmful for the fish. Future versions of the expert
software will also give possible reasons for poor environmental conditions and advice for how the
farmers, if possible, can remedy the situation or at least diminish harm to the fish. The high density
of fish farms in many costal zones means that the Welfaremeter has potential as a future source of
data for environmental and fisheries research. The purpose of this talk is to give an insight into the
present prototype and how we plan to improve the system further.
Keywords: Fish welfare, CTD, GPRS, expert software | no_NO |
dc.language.iso | eng | no_NO |
dc.publisher | ICES | no_NO |
dc.relation.ispartofseries | ICES CM documents;2008/R:18 | |
dc.subject | aquaculture | no_NO |
dc.subject | akvakultur | no_NO |
dc.subject | fish welfare | no_NO |
dc.subject | fiskevelferd | no_NO |
dc.title | A system for online assessment of fish welfare in aquaculture | no_NO |
dc.type | Working paper | no_NO |
dc.subject.nsi | VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922 | no_NO |
dc.subject.nsi | VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 | no_NO |
dc.source.pagenumber | 10 s. | no_NO |