Effect of dietary biofloc from a novel bacteriaponics recirculating aquaculture system on gut microbial community of barramundi (Lates calcarifer)

Microbial biofloc from a microaerophilic assimilation-based recirculating aquaculture system, with different carbon sources (semolina or sugar), was used in this study to evaluate its feasibility as a partial substitute for commercial fish feed in the diet of barramundi (Lates calcarifer). Three diets with varying biofloc levels (15% and 25% semolina biofloc, and 25% sugar biofloc) were compared with a standard control feed. Gut microbiome analysis was carried out to study the effect of diets on gut microbial community.