Funding for this research was provided by:
The Research Council of Norway (223108)
Received: 9 May 2019
Accepted: 20 January 2020
First Online: 31 January 2020
Ethics approval and consent to participate
: Rearing of the fish (Atlantic salmon, <i>Salmo salar</i>, Sunndalsøra breed) were conducted at Nofima’s Research Station at Sunndalsøra, which is a research facility approved by Norwegian Animal Research Authority (NARA) and operates in accordance with Norwegian Regulations of 17th of June 2008 No. 822: Regulations relating to Operation of Aquaculture Establishments (Aquaculture Operation Regulations). Trial fish were treated in accordance with the Aquaculture Operation Regulations during the trial. Fish were randomly sampled, anaesthetized and killed by a sharp blow to the head, in accordance with the Norwegian Animal Welfare act. No surgical manipulation of live fish was conducted, and tissue samples were only retrieved from euthanized fish. Ingredients commonly used in commercial diets were used in experimental diets and do not cause the fish any apparent distress. No NARA approval was required according to §2 of the Norwegian Regulation on Animal Experimentation.
: Not applicable.
: The present study was partly funded by BioMar AS. Co-author Anne Kristine Hansen is employed by BioMar.