All animals in which tuberculosis or paratuberculosis reactors have been found shall be quarantined and no animal in quarantined herds shall be disposed of until all of the remaining animals in such herds shall have passed at least three negative tuberculin or paratuberculin tests applied, not less than sixty days apart, by an approved accredited veterinarian, and the records of such tests shall be filed with the State Veterinarian; provided, however, animals from such herds for immediate slaughter may be moved on special permit issued under the authority of the State Veterinarian.