Section 39. Every person engaging in the business of dealing in bovine and porcine animals shall obtain a license therefor from the director, the fee for which shall be determined annually by the commissioner of administration under the provision of section three B of chapter seven for the filing thereof, and such license shall expire on November thirtieth following the date of issuance, unless sooner revoked. The director shall, subject to the approval of the commissioner of food and agriculture and of the governor, make rules and regulations governing the issuance and revocation of such licenses and the conduct of the businesses so licensed and relative to the maintenance of premises, buildings and conveyances, the health of bovine and porcine animals and the method and time of inspection and checking of said animals.