Long term effects on performance physiology and fillet quality of Atlantic salmon (Salmo salar L.) fed low fish meal and n-3 LC-PUFA diets where fish oil was substituted by whole Schyzochytrium limacinum biomass. Long term effects on performance physiology and fillet quality of Atlantic salmon (Salmo salar L.) fed low fish meal and n-3 LC-PUFA diets where fish oil was substituted by whole Schyzochytrium limacinum biomass

Atlantic salmon individuals were grown, from fresh water to salt water in tanks on diets with low fish meal (10%) and 1-1.25% total n-3 LC-PUFA levels. Dietary n-3 LC-PUFAs were supplemented by 1) fish oil (FO), 2) Schyzochytrium limacinum biomass (AA). Further, the fish from all treatments were mixed and redistributed in sea cages reared to slaughter (ca. 3kg body weight) on either FO or AA. Transcriptomics analyses in liver and intestinal tissues revealed significant dietary effects on the expression of immune modulating, as well as ion, lipid, protein and xenobiotic metabolism genes. Overall design: Salmon were grown in tanks from 18 g to 800 g on two diets with different sources of essential fatty acids: fish oil algae