Mont. Code § 81-2-104
When the department determines that it is necessary to eradicate or control an infectious, contagious, communicable, or dangerous disease of livestock in this state, in cooperation with the United States department of agriculture or other federal agency, and to appraise and destroy animals affected with or which have been exposed to a disease or to destroy property in order to remove the infection and complete the cleaning and disinfection of the premises or to do any act or incur any other expense reasonably necessary in suppressing this disease, the board may accept and adopt on behalf of the state the rules adopted by the United States department of agriculture or other federal agency under authority of an act of congress or the portion considered necessary, suitable, or applicable. The department may adopt other rules necessary or desirable for this purpose and cooperate with the United States department of agriculture or other federal agency in the enforcement of the rules accepted and adopted.
§ 81-2-104, MCA