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dc.contributor.authorYtrestøyl, Trine
dc.contributor.authorSveen, Lene
dc.contributor.authorKrasnov, Aleksei
dc.contributor.authorDalum, Alf Seljenes
dc.contributor.authorKolarevic, Jelena
dc.date.accessioned2023-03-14T14:24:24Z
dc.date.available2023-03-14T14:24:24Z
dc.date.issued2022
dc.description.abstractThe experiment tested the effect of nanomembrane filtration in RAS on the salmon's physiology, welfare and growth. A specially designed membrane was used to remove sulphate from seawater and to adjust salinity from 32 to 12 ‰. A RAS where salinity was adjusted to 12 ‰ by mixing raw seawater and freshwater was used as control. The fish were kept in the two systems for 10 weeks before being transferred to tanks with seawater flow through for 4 weeks. Histology and measurements of gene expression in the gills, intestine, and skin were done and blood samples were taken to measure the content of cortisol and blood plasma ions after transfer to seawater. Post smolt in RAS with nanofiltered water grew slightly better compared to traditional RAS and the same tendency was maintained after transfer to seawater. There were no differences between systems in welfare indicators or skin morphology. In RAS with nanofiltration, some individuals showed an increase in the area of the gill lamella covered by mucus-producing cells and a lower number of chloride cells on the secondary lamellae in the gills. The effect of nanofiltration on gene expression in skin and gills was small, with only two genes that were differentially expressed in skin and 28 genes in gillsen_US
dc.descriptionSource at <a href=https://nofima.no/>https://nofima.no/</a>.en_US
dc.identifier.citationYtrestøyl TY, Sveen L, Krasnov A, Dalum AS, Kolarevic J. Nanofiltration of intake water in RAS: Effect on fish performance, health and welfare. Nofima AS; 2022. 18 p.. Nofima rapportserie(19/2022)en_US
dc.identifier.cristinIDFRIDAID 2100415
dc.identifier.isbn978-82-8296-721-1
dc.identifier.urihttps://hdl.handle.net/10037/28752
dc.language.isoengen_US
dc.publisherNofimaen_US
dc.relation.ispartofseriesNofima rapportserie ; 19/2022en_US
dc.relation.projectIDNofima AS: 12770en_US
dc.relation.projectIDNorges forskningsråd: 296739en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.titleNanofiltration of intake water in RAS: Effect on fish performance, health and welfareen_US
dc.typeResearch reporten_US
dc.typeForskningsrapporten_US


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