No officer or agent of the State Veterinarian may enter the actual enclosures of any person except with the consent of the person lawfully in possession thereof or in the absence of such consent, with a proper writ obtained as in other cases of searches and seizures under constitutional law. When such officers and agents are lawfully on the premises, either by permission or writ, they shall be authorized to inspect the premises and the livestock and animals found thereon by entering the enclosures and buildings and they are authorized to check livestock and poultry found therein for any contagious diseases and take proper action to control or eradicate any such diseases that may be found. While such officers and agents are performing their duties hereunder, they shall not be personally liable except for gross negligence. The refusal without lawful reason of any person to give the consent aforesaid shall be deemed a misdemeanor and shall be punishable as for violations of Article 5 of this chapter as provided for in Section 69-15-115. The Board of Animal Health shall administer the special fund created in Section 69-15-19.