Quillaja saponins—a natural growth promoter for fish

Environmental concerns and the forthcoming ban on antibiotics in the European Union have renewed interest in renewable and non-persistent plant-based growth promoters in fish feeds. A review of the published literature and unpublished recent results following addition of a Quillaja saponin mixture in the diets of common carp and Nile tilapia are presented. It emerges that Quillaja saponins have the potential to increase growth in culture fish...