Hydrolyzed microalgae from biorefinery as a potential functional ingredient in Siberian sturgeon (A. baerii Brandt) aquafeed

The development of sustainable and functional feed represents an opportunity and a need for the aquaculture industry, supporting beneficial physiological effects on fish that go beyond traditional feed formulations. This study aims to evaluate the potential application of microalgae, produced through a sustainable process, as a functional ingredient in practical diets for Siberian sturgeon (Acipenser baerii) fingerlings. For this purpose, the effects of the dietary administration of two different microalgae, Nannochlopsis gaditana and Scenedesmus almeriensis, cultivated on conventional synthetic medium (SM) or diluted pig manure (PM) and included in diets as crude or hydrolyzed biomasses, were tested.