ALTERNATIVE PROTEINS OR ACTIVE INGREDIENTS? COMPARISON OF DIFFERENT DIETS ON Dicentrarchus labrax FILLET QUALITY AND OXIDATIVE STABILITY

In recent years, aquaculture has proven to be the fastest growing sector in the agri-food industry. The use of non-conventional protein source responds to the need of the aquafeed sector to replace conventional dietary protein sources with eco-friendly and nutritious ones potentially acting also as functional ingredients. Considering the recent researches, Hermetia illucens meal (HM) and poultry by-product meal (PBM) can be considered valuable alternative protein sources fitting the ecological transition towards a circular bio-economy. Recently, dried marine microalgae biomass (MA) and red swamp crayfish meal (RCM) have also been seen as interesting supplements due to their valuable profile in n-3 polyunsaturated fatty acids (PUFA) and content in vitamins, minerals, and natural antioxidants. Due to this, the aim of the present trial was to evaluate the effects of five experimental diets contained the aforementioned protein sources on European sea bass fillet quality and oxidative stability during 60 days of frozen storage.