(1) Female cattle under the age of four months imported without their dams into the state of Montana for any purpose other than immediate slaughter shall be quarantined on arrival and must be vaccinated for brucellosis within six months of their entry, with no change of ownership allowed until animals are officially vaccinated, except for cattle from a:

(a) state, area, province, or territory that has been brucellosis class free for ten years or more; or

(b) brucellosis free state, area, province, or territory as designated by the Board of Livestock.

(2) All cattle imported under this rule must have official individual identification that is applied at the state of origin.