Montana Department of Livestock

Here to serve the people of Montana and its livestock industry.

Animal Health Bureau

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Contact Information

Department of Livestock
Animal Health Bureau
PO Box 202001
Helena, MT 59620-2001
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Brucellosis/Montana's Designated Surveillance Area (DSA)

DSA Regulations

DSA Regulations (ARM)

Variances may be available with a herd management agreement (call MDOL at 406-444-2976).

Brucellosis (Bangs) Vaccination:

All sexually intact female cattle or domestic bison 12 months of age or older in Beaverhead, Big Horn, Broadwater, Carbon, Gallatin, Jefferson, Madison, Park, Stillwater, and Sweet Grass counties must be official vaccinates.

Official vaccinates are calfhood or adult vaccinates (AV).

Vaccination requirements apply to resident female cattle as well as cattle seasonally grazing in these counties.

Brucellosis Testing (Bleeding):

All sexually intact cattle and domestic bison must be tested for brucellosis within 30 days prior to leaving the DSA or changing ownership.

  • No test is required for animals less than 12 months of age that will be fed for slaughter and not used for breeding.
  • Cattle consigned to a licensed Montana livestock market are tested on arrival.
  • A test completed July 16 or after is acceptable for movement out of the DSA or change of ownership through February 15 the following year.

Identification and Disease Traceability:

All sexually intact cattle and domestic bison (regardless of age) leaving the DSA must be officially identified.

Official individual identification tags include:

  • Electronic Identification Device (EID) tags (also known as RFID tags);
  • Orange brucellosis (metal or RFID) vaccination tags on officially brucellosis vaccinated females;
  • Silver metal "Brite" tags (available to producers at no charge from the MDOL or USDA-APHIS office).

DSA Boundaries

DSA Testing Reimbursement Requests

Costs of DSA testing and adult vaccination are compensated for veterinarians and producers on a state fiscal year schedule (July 1 through June 30) and are dependent upon availability of funds.  Rates are determined by MDOL.  Policies and rates are subject to change.  See below for current rates and forms.

Veterinary Reimbursement:

Veterinarians are no longer required to complete a reimbursement request form for brucellosis tests. The new (May 2021) multiple animal laboratory submission form functions as a reimbursement request if marked as DSA testing AND a premises ID is included for the animal(s). Please contact our office for more information about premises ID. Adult/booster brucellosis vaccinations still require a reimbursement request form.

Producer Reimbursement:

Producers may request reimbursement for DSA-related brucellosis testing at a rate of $2/head by completing a W-9 and a producer survey. Surveys must be completed annually.


Reimbursement Rates:

Veterinarian, 1-10 animals


Veterinarian, 11-50 animals


Veterinarian, 51 or more animals


Veterinarian, livestock market testing


Veterinarian, adult (booster) brucellosis vaccination


Producer reimbursement


Additional Information

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