(a) The Department of Agriculture or any member thereof, or any of their duly authorized agents, may enter any premises, farms, fields or pens, where any domestic animals are at the time quartered, for the purpose of examining them in any way that is deemed necessary to determine whether they are or were the subjects of any contagious or infectious diseases.
(b) For purposes of this section, it shall be the duty of the owner or custodian of any animals proposed to be examined, to adequately restrain and confine said animals in an area accessible to the examiner and so designated by him or her on the premises.