If, upon investigation, the state veterinarian is satisfied that an animal, livestock or bird or a herd or flock of animals or birds is suffering from any highly contagious, communicable or infectious disease or exposure thereto, against which he may think best to quarantine, he shall immediately quarantine the same to pens, farms, sheds or barns completely separated from other susceptible animals or birds not so diseased or infected until
§ 267.590, RSMo