| Summary: | Aquaculture started in China some 5,000 years ago with carps in ponds fed with wastes from silk production and this form of local growth of low trophic fish on a natural food web still is very important. But to date high trophic species such as Atlantic salmon are the most traded, are typically kept at high stocking densities and require high-quality feed pellets. Balancing between a globally increasing demand for fish products, different forms of aquaculture, and the need to avoid feed-food competition, requires tailored formulations of aquafeed which includes by-products and novel ingredients.
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