How to Treat Mycoplasma Galliseptum in Chickens


Mycoplasma galliseptum (or gallisepticum) (MG) is a bacterial infection in chickens, turkeys and other birds. It can have no symptoms, but the most common signs of MG infection in chickens are coughing, respiratory discharge, lack of appetite, swollen sinuses, slow growth, and leg problems. Even if an infected bird shows no symptoms, MG infection can cause a decrease in breeding and egg production. A veterinarian can diagnose MG infection, and there are medications available for treating this illness.

Things You'll Need

  • Disinfectant
  • Antibiotics
  • Quarantine area

Contact a veterinarian for diagnosis.

Quarantine infected birds to prevent other birds from becoming infected.

Clean the living quarters of the infected birds after removing them. Throw away the litter, and disinfect all surfaces. Stack and store the litter for three weeks before disposing of it. Make sure to dispose of the litter safely so it doesn’t contaminate other farms.

Treat the infected birds with antibiotics such as spiramycin, tylosin, tetracyclines, tilmicosin, or fluoroquinolones.

Vaccinate the infected birds with dead vaccine to reduce symptoms, and vaccinate healthy birds with live vaccine to prevent infection.

Treat any other infections the birds may have.

Reduce dust in the birds’ environment.

Tips & Warnings

  • Talk to your veterinarian about the best strategy for preventing MG infection in your flock.
  • MG can become airborne and spread to other birds, so distance between birds is a great weapon against the spread of MG infection.
  • You can monitor your flock for infection by checking egg sera every three weeks. This is a good idea in high-risk regions.
  • Humans can carry MG in their hair and in their noses for several days after being in contact with infected birds. Shower after you are around infected birds, and don't handle healthy birds just after handling infected ones.

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