Effect of enzymes (phytase and xylanase), probiotics (B. amyloliquefaciens) and their combination on growth performance and nutrient utilisation in Nile tilapia

摘要: Abstract The increased use of plant ingredients in aquafeeds over the last decades, as replacement for fish meal, has led to rising levels undesired non-starch polysaccharides (NSP) and phytate. Both NSP phytate degrading enzymes probiotics have been widely studied. They can be used a tool deal with increasing aquafeeds. However, studies combining both are scarce fish. main objective present study was assess impact on Nile tilapia (Oreochromis niloticus) probiotics, well their synergistic effect. Parameters measured were: growth; nutrient digestibility; body composition; energy, nitrogen (N), P Ca balance. Diets were supplemented with, without, an enzyme mix (phytase at 1000 FTU/kg xylanase 6000 U/kg) (three strains B. amyloliquefaciens 60 mg/kg feed), according 2 × 2 factorial arrangement. This resulted control treatment (CON-CON) without (ENZ-CON), probiotic (CON-PRO) (ENZ-PRO). In total, 16 tanks (4 replicates/treatment) 35 each (mean initial weight 39 g). Fish restrictively fed equal amounts dry matter 42 days. (P