Pathogenicity of Two Strains of Mycoplasma Gallisepticum in Turkeys

Avian Dis. Apr-Jun 1982;26(2):360-4.


Strains F and R of Mycoplasma gallisepticum (MG) were compared for their pathogenicity in broad-breasted white turkey poults in terms of induction of airsacculitis, depression of growth rate, and induction of antibody production against MG. Eye-drop inoculation with the F or R strain produced only minimal lesions. However, aerosol exposure with either MG strain resulted in a significantly higher incidence and severity of air-sac lesions (P less than 0.001), reduction of growth rate (P less than 0.005), and hemagglutination-inhibition (HI) antibody titers against MG than did eye-drop inoculation. There were no significant differences between the two MG strains in effects on incidence of air-sac lesions or on growth rate.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Air Sacs / microbiology*
  • Animals
  • Chickens / microbiology
  • Mycoplasma / pathogenicity*
  • Mycoplasma Infections / microbiology
  • Mycoplasma Infections / veterinary*
  • Poultry Diseases / microbiology*
  • Respiratory Tract Infections / microbiology
  • Respiratory Tract Infections / veterinary
  • Turkeys / microbiology*
  • Virulence