Mycoplasma gallisepticum

Mycoplasma gallisepticum (MG) causes chronic respiratory disease in chickens and infectious sinusitis in turkeys and peafowl worldwide.Mycoplasma spp are Mollicutes bacteria that lack a cell wall around their membrane, and as such, often unaffected by many common antibiotics that target cell wall synthesis. Antimicrobials commonly used to treat Mycoplasma infections include tetracyclines, macrolides (tylosin, tilmicosin), and more recently, fluoroquinolones (enrofloxacin, difloxacin), and pleuromutilins (tiamulin).

Survival in the environment: The survival time of M. gallisepticum outside of a host varies from 1 to 14 days, depending on environmental conditions (substrate) where M. gallisepticum cells are found, temperature, humidity, and pH.

Susceptibility to disinfectants: Phenolic disinfectants, 1% sodium hypochlorite, 70% ethanol, formaldehyde, glutaraldehyde, iodophore, and peracedic acid are effective against Mycoplasma spp.



  • Order: Mycoplasmatales
  • Family: Mycoplasmataceae
  • Genus: Mycoplasma


  • chickens
  • turkeys
  • finches
  • flamingos
  • peafowl
  • pheasants