According to new results from the EU Arraina project, some of the recommendations on vitamin and mineral supplements in feeds for Atlantic salmon must be changed. This is due to a shift from mainly marine ingredients to feeds where more than 70% comes from plants. "Even if the plants contain these nutrients, the fish are unable to absorb them to the same extent as they would from marine feeds. Plant ingredients also contain lower levels of some nutrients than fish meal and fish oil do. That is why we need to adjust the amount of micronutrients."