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dc.contributor.authorSolstorm, Frida
dc.contributor.authorSolstorm, David
dc.contributor.authorOppedal, Frode
dc.contributor.authorFernø, Anders
dc.contributor.authorFraser, Thomas
dc.contributor.authorOlsen, Rolf Erik
dc.identifier.citationSolstorm F, Solstorm D, Oppedal F, Fernö A, Fraser TWK, Olsen RE (2015) Fast water currents reduce production performance of post-smolt Atlantic salmon Salmo salar. Aquacult Environ Interact 7:125-134nb_NO
dc.description.abstractIn the future, an increasing number of salmon farms may be located in areas with fast water current velocity due to limited availability of more sheltered locations. However, there is little information as to how fast currents affect fish health and welfare. We used raceways to expose Atlantic salmon post-smolts (98.6 g, 22.3 cm) to homogeneous water velocities corresponding to 0.2, 0.8 and 1.5 body lengths s-1 (slow, moderate and fast, respectively) over 6 wk. Fish at fast velocity had a 5% lower weight gain compared to fish at moderate and slow velocities, with a corresponding reduction in length. Fish at moderate and fast velocities had lower lipid content in the muscle compared to fish at slow velocity. Hence, fish at slow and moderate velocities had the same weight gain, but fish at slow velocity gained more fat and fish at moderate velocity more muscle protein. Fish at fast velocity had a higher relative ventricular mass, indicating an increased cardiac workload. At slow velocity, individual fish displayed elevated plasma levels of lactate, osmolality and potassium. Our results suggest that post-smolts had the best growth and welfare at moderate velocity and that a current velocity of 1.5 body lengths s-1 could compromise production performance.nb_NO
dc.rightsNavngivelse-DelPåSammeVilkår 3.0 Norge*
dc.titleFast currents reduce production performance of post-smolt Atlantic salmon.nb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.subject.nsiVDP::Landbruks- og fiskerifag: 900::Fiskerifag: 920::Akvakultur: 922nb_NO
dc.subject.nsiVDP::Agriculture and fisheries science: 900::Fisheries science: 920::Aquaculture: 922nb_NO
dc.source.journalAquaculture environment interactionsnb_NO
dc.relation.projectNorges forskningsråd: 207116nb_NO

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