Composition and method for controlling intestinal pathogenic organisms

摘要

An antigen composition for stimulating an immune response in an inoculated avian species to at least one intestinal pathogenic organism includes naturally-occurring wild Salmonella enterica subspecies in O-serogroups B, C3 and D. Subspecies in O-serogroup B can include Salmonella typhimurium and/or Salmonella agona. Subspecies in O-serogroup C3 can include Salmonella Kentucky. Subspecies in O-serogroup D can include Salmonella enteritidis. The antigen composition can be used alone or in combination with a Marek's Disease vaccine to reduce shedding of E. coli and/or Salmonella bacteria.