Before any livestock sold pursuant to this chapter is delivered, whether interstate or intrastate, the livestock must be inspected for health by a veterinarian licensed in this state and approved by the state board of animal health and, in the case of cattle, for brands by a trained brand inspector, acting under rules adopted by the North Dakota stockmen’s association and the state board of animal health. The inspection must take place at the time of the initial delivery of the livestock. If livestock is destined to be shipped interstate, the authorized veterinarian shall furnish to each purchaser a certificate showing that the inspection has been made and treatment administered in accordance with the requirements of the state of destination. The services and duties of the veterinary inspector are under the supervision of the state board of animal health. Fees for the veterinary inspection must be an amount agreed upon by the representative and the veterinarian. All fees for veterinary inspection, treatment, and services must be collected by the representative and paid to the inspector.