The state veterinarian shall enforce the tuberculin testing or the brucellosis testing of all animals entering the state as prescribed by rule or in a circumscribed area as established by the board in accordance with the provisions of this chapter providing for the eradication of bovine tuberculosis or brucellosis, as the case may be, and the rules of the board relating to eradication. Whenever a circumscribed area is established by the board as an area in which all animals are to be tuberculin tested or brucellosis tested, as the case may be, and the test is undertaken under the direction of the board, no other animals may be permitted to enter the area except under a special permit and restrictions provided by the board unless:
N.D.C.C. § 36-15-14