Evaluation of the Bactericidal Effect of Nebulized Silver Nanoparticles on Common Respiratory Bacteria in Horses– In Vitro Studies

•Silver nanoparticles (AgNP) could represent a candidate for alternative to antibiotics•AgNP inhibits growth of the gram-positive S. zooepidemicus and gram-negative A. equuli reported in this study•In vitro antimicrobial susceptibility to AgNP was observed for concentrations as low as 25 ppm for A. equuli and 12,5 ppm for S. zooepidemicus after 8 hours of incubation•Bactericidal effect of AgNP is preserved after nebulization