Spray dried microalgae biomass (Schizochytrium sp.) included up to
5% in extruded feeds for salmon can successfully replace fish oil as
source of n-3 LC-PUFA without compromising fish growth rate and
FCR, dietary protein and energy digestibility and flesh quality. Dietary
Schizochytrium sp. improved the retention efficiency of EPA + DHA
and monounsaturated fatty acids, improved the technical quality of
salmon fillets in terms of gaping. Dietary organic minerals included in
low fishmeal diets for Atlantic salmon significantly improved fillet quality
technically, in terms of lower gaping incidence, and nutritionally, in
terms of increased DHA and monounsaturated fatty acid levels.