New case study: industrial hemp as a sustainable aquafeed ingredient
New case study: industrial hemp as a sustainable aquafeed ingredient
A new SAIC-supported project has demonstrated the potential of industrial hemp as a sustainable, high-performance aquafeed ingredient for Atlantic salmon and shrimp.
The collaboration - between SAIC, Rare Earth Global, the University of Stirling, Mowi Scotland, Nofima, and funded by the Seafood Innovation Fund - explored the use of UK-grown hemp protein concentrate (HPC) as an alternative to conventional soy protein. The project value was £332,535.
The results showed not only that HPC was viable but that it was environmentally superior. to soy. Salmon trials showed a superior feed conversion ratio, with no compromise on welfare, quality or the growth of fish. Compared to other sustainable alternatives, HPC delivered 71% lower emissions, positioning it as a promising ingredient for future aquafeed formulations.
Hemp offers a comparable amino acid profile to soy, improves soil health, requires less water, and supports better yields in follow-on crops. Rare Earth Global’s model uses locally grown industrial hemp, transforming seed by-products into high-protein feed and creating a potentially carbon-negative ingredient.
Rare Earth Global is expected to begin commercial sales of HPC in 2025, with projected revenues of up to £1 million predicted. The project also established new domestic supply chains, enhancing the resilience of UK aquaculture by reducing reliance on imported feed ingredients and supporting circular economy goals.
This project lays the groundwork for future research and commercialisation, marking a significant step toward more sustainable aquaculture practices in the UK.
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