Nutritional innovations in superior European sea bass (Dicentrarchus labrax) genotypes: Implications on fish performance and feed utilization

The sustainable development of the aquaculture industry relies on use alternative conventional and emergent raw materials that contributes to a circular economy reduce dependency fish meals oils coming from oceanic populations. Additionally, genetic selection farmed can display higher growth feed utilization when fed feeds, is pointed out be complementary valuable tool facilitate implementation approaches. main purpose present study was determine effectiveness for in European sea bass, response challenge with an diet aimed partially replaced fishmeal (FM) by poultry meal (PM) totally replace oil (FO) blend (PO) novel microalgae oil. two families juveniles were obtained vitro fertilization selected multi-trait including high (genetically selected, GS) or non-selected (wild type, WT) broodstocks then nutritionally challenged control mirrored standard commercial (20%) (7%), Future FM PM FO rapeseed oil, PO, DHA rich-algal From second month feeding until end trial, bass since 7 generations performed better terms than wild-type genotype, possibly related apparent favored nutrient utilization. Furthermore, decreased perivisceral fat increased nutritional value flesh increasing (in g/ 100 g flesh) ARA contents. In contrast, dietary treatment showed little effect performance, denoting successful partial replacement total microalgal However, tended ADCs some amino acids, as well additive genotype n-3 PUFA flesh. Altogether, our data demonstrate improve plasticity cope variations ingredients feeds low FM/FO.