All certified milk herds must be isolated from hogs, horses, fowl and stray dogs. All animals which the owner or operator of a dairy does not know to be free from disease, including brucella infection as shown by a blood test, must be excluded by the owner or operator from contact with animals of certified herds in barns, yards or pastures.
Nev. Admin. Code § 584.2741
NRS 584.067, 584.208