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How much wild fish does it take to feed farmed fish?

Skretting now has the know-how and R+D to produce feed for Atlantic salmon that requires zero fishmeal and zero fish oil. We invest in R+D which provides full flexibility. Our consistent and ever-evolving R+D efforts ensure that we are also minimizing our use of finite raw materials, such as fishmeal and fish oil. In fact, in 2017, Skretting launched MicroBalance Infinity, a concept that proves that a salmon can be farmed from 1kg to harvest using zero fishmeal or fish oil. The MicroBalance concept was launched in 2010 when Skretting was able to reduce fishmeal in our food for the first time without negatively affecting fish health and performance, and it remains critical to expanding our knowledge in other species.

Pelagic fish

Marine ingredients

While a large amount of by-products used to produce fishmeal and fish oil come from the processing of fisheries for human consumption, an increasing amount comes from by-products of aquaculture processing. Trimmings are collected from seafood processing plants, processing at retailers, processing plants in aquaculture, processing on board fishing boats, and more.

In 2019, 27% of fishmeal and fish oil at Skretting originated from offcuts and by-products. Most of these by-products come from wild fisheries, but we see an increase in by-products from processing farmed species such as salmon, tilapia, and prawn.

Our ambition is that all fishmeal and fish oil from the trimmings should be traceable back to the origin of the fish and fish species. These species should not be listed as endangered on the IUCN red list.

MicroBalance®: an innovation in aquafeed production

Aquaculture production will need to more than double by 2050 to meet the demands of a growing population. At the same time, we must reduce the pressure on the planet's resources. How can we grow sustainably? Basically, we need to produce more with less. That's where MicroBalance® comes into the picture.

Using technology that builds on our latest knowledge of essential micronutrients and how they interact with fish and shrimp, MicroBalance® allows us to replace one feed raw material with another without affecting the performance, welfare or quality of the final product.

Crucially, this innovation, which is the result of several years of research conducted by the Skretting Aquaculture Research Centre (ARC), allows us to produce feeds with a much lower fishmeal content in several important species.

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Tree illlustration Tom Berry