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Mycoplasma Meleagridis

Mycoplasma meleagridis (MM) is a pathogen found predominately in turkeys. It is an egg-transmitted disease that primarily causes airsacculitis in young birds that were breed from infected breeders.

MM is transmitted from hen to offspring, which increased incidents as the flock ages. MM can also be introduced from contaminated clothing or equipment from flock owners or visitors.


Unthrifty appearance
Respiratory distress
Stunted growth
Crooked neck with deformity
Leg deformation


  • History
  • Clinical signs
  • Mycoplasma culture
  • FA test
  • PCR
  • qPCR
  • RAPD


Tylosin10-15 mg/kg (administered IM, twice a day) or 0.5 g/L (added to drinking water, once a day)K Marx
Colloidal silver2 drops/kg administered orally, once daily.K Marx
Apple cider vinegarMay help clear mucus from mouth and throat. Add 1 tablespoon of apple cider vinegar to each gallon of water (double dose if using hard water)G Damerow; K Marx


  • Purchase eggs or poults from breeder flocks free of MM
  • Perform periodic blood tests
  • Dip eggs in tylosin or other antibiotic

Scientific References

Good Overviews

Risk Factors

  • Purchasing birds or eggs from flocks that are not NPIP certified.