Animal HealthDiseasesBrucellosis

Brucellosis/Montana's Designated Surveillance Area (DSA)

DSA Regulations

DSA Boundaries 

Testing Reimbursement Forms

Additional Information



DSA Regulations

    DSA Regulations (ARM)

    Quick Reference Card

Some variances may be available with a herd plan (call MDOL at 406-444-2043).

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.

  • Note: Animals that reside in the Designated Surveillance Area (DSA) may be subject to additional regulations

    Brucellosis Testing (Bleeding):

    All cattle and domestic bison must be tested for brucellosis within 30 days prior to change of ownership or movement out of the DSA if they are:

    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:

    DSA Boundaries

    Current DSA Boundaries

    DSA Testing Compensation 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) according to availability of funds and at rates specified by MDOL. Beginning July 1, 2015, requests for compensation must be received within 60 days of sample collection. Policies and compensation rates may vary from year to year; see below for current request forms.

    Additional Information


Animal Health Bureau

Helpful Links


Contact Information

Department of Livestock
Animal Health Division
PO Box 202001
Helena, MT 59620-2001
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