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New generation feed ingredients and additives for Atlantic salmon - studies on fish growth/health and feed performance

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The salmon feed industry is continuously searching for new ingredients that are sustainably produced and have a minimal environmental impact. The industry has succeeded in reducing the dependence on fishmeal and fish oil. However, as new ingredients are being developed as feed components, we need to document their potential to ensure good growth, health, and welfare of farmed salmon. A series of experiments aimed at evaluating feed ingredients and additives are to be undertaken.

Aims: We plan to examine novel ingredients such as microalgae, macroalgae, insect meal, copepods, krill, and seafood processing waste and hydrolysates from these ingredients. Microalgae will be selected based on our current knowledge. We have already examined the suitability of several microalgae as salmon feed ingredients and the information gained will be employed for further testing new strains (including local varieties) and their derivatives (oil, protein or defatted biomass). Furthermore, macroalgae, insect meal, mealworms, copepods and polychaetes (and their derivatives) will also be studied. In addition, we intend to employ prebiotics /phytoderivatives and probiotics as feed additives.

The goal of these studies will be to identify feed ingredients/additives - i) that gives a good feed conversion ratio ii) that contains nutrients that are bioavailable to salmon iii) that do not cause negative effect on the health of the fish iv) that produce high-quality fillets for the end-user and v) that contribute to improving the sustainability of salmon farming.