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This page contains information on MG-Bac for veterinary use.
The information provided typically includes the following:
  • MG-Bac Indications
  • Warnings and cautions for MG-Bac
  • Direction and dosage information for MG-Bac


This treatment applies to the following species:
Company: Zoetis

Mycoplasma Gallisepticum Bacterin

For Veterinary Use Only

This product has been shown to be effective for the vaccination of healthy chickens and turkeys 1 week of age or older against Mycoplasma gallisepticum infection. Duration of immunity has not been established. For more information regarding efficacy and safety data, go to

Directions For Use

Inject 0.5 mL subcutaneously (in the lower neck region) in birds 1 to 10 weeks of age using aseptic technique. Birds 10 weeks of age or older may be vaccinated intramuscularly or subcutaneously. Vaccinate only healthy birds prior to field exposure. The vaccination program should be completed prior to the point of lay. For optimum results, administer two 0.5-mL doses at least 4 weeks apart. Historically, revaccination with this product was recommended during molt before the second laying period. The need for booster vaccinations has not been established for this product; consultation with a veterinarian or the manufacturer is recommended.


Store in the dark at 2°-8°C. Do not freeze. Warm to 22°-32°C and shake well before using. Use entire contents when first opened. Do not vaccinate within 42 days before slaughter. Do not vaccinate broilers or meat turkeys by the intramuscular route of administration. If birds are vaccinated during lay, a drop in egg production may occur. Contains penicillin and formaldehyde as preservatives. Do not mix with other products. In case of human exposure, contact a physician.

Technical inquiries: (888) 963-8471

VLN 190/PCN 2774.00

Zoetis Inc., Kalamazoo, MI 49007, USA

500 mL

1,000 Doses


CPN: 3690295.3

Telephone:   269-359-4414
Customer Service:   888-963-8471
THIS SERVICE AND DATA ARE PROVIDED "AS IS". DVMetrics assumes no liability, and each user assumes full risk, responsibility, and liability, related to its use of the DVMetrics service and data. See the Terms of Use for further details.

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