Dual effect of dietary seaweed of extract nanoparticles (GNS) with bionanocomposite cellulose acetate membranes (CA/bio-AgNps) on growth performance and health status of the Nile tilapia (Oreochromis niloticus): Specification on feed utilization, immune system, and antiparasitic action

Seaweed draws a lot of attention for its vital role in aquaculture as it contains beneficial biological compounds that undoubtedly might help the development this field. The current study sheds light on potential efficiency dietary supplements Grateloupia acuminata and G. doryphore (Halymeniaceae) nanoparticles (GNS) at different levels with bionanocomposite cellulose acetate membranes (CA/bio-AgNps) improved growth performance, digestive enzyme activity, immunity, antioxidative, resistance against infectious pathogens, characterization water quality treated CA/bio-AgNps is used rearing Nile tilapia ( Oreochromis niloticus ). Four concentrations (0.1, 0.25, 0.5, 1.0 ml/L) GNS extract were tested anti-bacterial efficacy being parasitic. Fish an average weight (24.46 ± 0. 50 g) apportioned into six experimental groups (T0, T1, T2, T3, T4, T5) represented 0.0%, 0.1%, 0.25%, 0.5%, 1.0% diets CA/bio-AgNps, respectively. Injection fish Aeromonas hydrophila was performed end trial. Chemical bacteriological indices significantly showed improvement after than control group. Growth, carcass composition, enzyme, hematological biochemical noticed positive p< 0.05), especially T4 T5, In parallel, significant serum lysozyme, total immunoglobulin, complement C3, antioxidative relative expression hepatic inflammatory genes increased level 0.05) are upregulated Remarkably, GNS-supplemented extracts provided A. decreased percentage mortality, besides antibacterial strains Cichlidogyrus tilapiae , To sum up, seaweed resulted better performance fish, antipathogenic effect, health status. Furthermore, improving characteristics. They should be studied applied more future.