Egg Industry Presentations

Managing Salmonella Risk, Midwest Poultry Federation Convention, Carl Heeder, DVM

 

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• View the Presentation as a PDF file


Dr. Carl Heeder of Zoetis (formerly Pfizer Animal health-Global Poultry), reviewed vaccination as a component of an integrated approach to prevent Salmonella infection in laying flocks. The Power Point set which was presented during the Layer Program at the Midwest Poultry Federation Convention is reproduced with permission as a service to Subscribers. Key points emphasized by Dr. Heeder included:-

  • Vaccination is a significant preventive measure complementing biosecurity, placing chicks from an NPIP-SE clean hatchery, biosecurity, rodent suppression and possibly feed additives
  • Effective administration of vaccine to achieve durable immunity is critical to a successful program of prevention
  • Protection can be enhanced by administering more than one dose of inactivated SE vaccine
  • A comprehensive vaccination program will reduce intestinal colonization and organ infection but will not completely prevent infection when hens are challenged under laboratory conditions with high levels (106 cfu) of SE
  • High antibody level as measured using the Biochek® ELISA assay correlates with protection
  • The protection stimulated by two successive live mutant S. Typhimurium (ST)  vaccines (1-2 days and then 14 days) can be affected by day-old injection of gentamycin at the hatchery. The inhibitory effect varies according to vaccine selected.
  • ST vaccine provides partial protection against S. Heidelberg and S Kentucky infection as determined under experimental conditions.

• View the Online Slide Presentation

• View the Presentation as a PDF file