Brewery by-products (yeast and spent grain) as protein sources in gilthead seabream (Sparus aurata) feeds
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San Martin, D.
Two trials were conducted to test the effect of partial replacement of fishmeal by two brewery industry by-products, yeast and spent grain, included in isoproteic and isolipidic diets for gilthead sea bream (Sparus aurata), having in mind the commercial availability of these by-products. According to the obtained results, the inclusion of up to 30% brewers' spent yeast and 15% spent grain in the feed for gilthead seabream gave similar results in terms of growth, food conversion and fillet final composition to a feed with fish meal as the main protein source and show a protein digestibility of 89–95%. Taking into account that these by-products are produced in large quantities in Europe, they can be a potential source of protein to reduce the use of plant proteins or fish/animal by-products (trimmings) and increase the sustainability of both sectors, brewery industry and aquaculture.
639 - Caça. Pesca. Piscicultura
Is part of
Estévez, A., L. Padrell, B. Iñarra, M. Orive, and D. San Martin. 2021. "Brewery By-Products (Yeast And Spent Grain) As Protein Sources In Gilthead Seabream (Sparus Aurata) Feeds". Aquaculture 543: 736921. doi:10.1016/j.aquaculture.2021.736921.
Grant agreement number
EC/LIFE/LIFE16 ENV-ES-000160/EU/New strategies for improving the sustainability of breweries: Full waste recovery for Aquaculture feed/LIFE-Brewery
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