Mycoplasma gallisepticum

Mycoplasma gallisepticum (MG) causes chronic respiratory disease in chickens, turkeys, peafowl, and pheasants 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 spp. infections include tetracyclines, macrolides (tylosin, tilmicosin), and more recently, fluoroquinolones (enrofloxacin, difloxacin), and pleuromutilins (tiamulin).

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