Executive director; duties, oath and bond.

The executive director of the board shall keep records of inspections of brands and earmarks as deemed necessary by the board and shall perform such other duties as are prescribed by the board. He shall take and subscribe an oath faithfully to perform all of his duties as executive director of the board and shall enter into bond in an amount to be fixed by the board, with good and sufficient sureties, to be approved by the board, conditioned for the faithful performance of his duties.