Pelvetia canaliculata as an Aquafeed Supplement for Gilthead Seabream Sparus aurata: A Biorefinery Approach for Seaweed Biomass Valorisation

For sustainable and economically viable aquaculture, it is necessary to search for alternative sources of aquafeeds. Algae have been studied because their bioactive compounds with several activities such as antioxidants. The direct incorporation the macroalgae Pelvetia canaliculata in sunflower oil increase oxidative stability biological value results waste high nutritional that may be used an ingredient aquaculture feed. This study aimed evaluate effect incorporating algae powder (PEL 1%, PEL 10%) obtained after supplementation (WO WO aquafeeds gilthead seabream. We growth performance, haematological profile, stress metabolic parameters, intestine histomorphology. Experimental diets did not influence performance or somatic indexes, barely affected profile. Catalase showed higher activity seabream fed PEL10 than control diet. Total glutathione had a fish both diets. Plasmatic levels cholesterol were PEL1 WO10. Triglyceride WO1 total lipids histomorphology was slightly modulated by experimental but negatively. In general, algal aquafeed according growth, some catalase glutathione, intestinal villi length, number acid goblet cells.