Researchers at the Flanders Research Institute for Agriculture, Fisheries and Food (ILVO) are studying the use of residual flows from algae production for chicken feed. The study is part of the ValgOrize project, which promotes algae as food for humans in Europe. The research focuses on the nutrient value of the remaining biomass and the efficient addition of algae residuals to animal feed. Initial results show that the residual flows cannot be added to the chicken feed without further processing to reduce salt and mineral content. The project also explores the potential of algae in reducing antibiotic use in animals by selecting specific macroalgal polysaccharides to support immune function and intestinal epithelium integrity.