The board shall choose a veterinarian on staff at North Dakota state university to act as consulting veterinarian to the board. The term of appointment is open and at the will of the board. At the discretion of the board, the consulting veterinarian, or any United States department of agriculture approved laboratory shall make diagnostic examinations of all diseased animals or portions thereof or of such material as may be forwarded by the board or the commissioner’s duly authorized agents. For services, the consulting veterinarian or United States department of agriculture approved laboratory is entitled to receive such compensation as the commissioner may deem proper, which must be paid out of the fund appropriated for the use of the commissioner.