Rapeseed oil as an alternative to marine fish oil in diets of post-smolt Atlantic salmon (Salmo salar): changes in flesh fatty acid composition and effectiveness of subsequent fish oil “wash out”

Duplicate groups of Atlantic salmon post-smolts were fed five practical-type diets in which the added oil was 100% fish oil (FO)/0% rapeseed oil (0% RO), 90% FO/10% RO (10% RO), 75% FO/25% RO (25% RO), 50% FO/50% RO (50% RO) or 100% RO for 16 weeks. After sampling, the remaining fish were switched to a commercial grower diet containing FO as the only added lipid for a further 12 weeks. There were no effects of the inclusion of RO on growth or...