In adopting regulations for the purpose of sanitation and to prevent deception, the Board shall be guided by those regulations recommended by the U.S. Department of Health and Human Services and the U.S. Department of Agriculture. The definitions and standards so adopted may conform, so far as practical, to the definitions and standards adopted or recommended by the Secretary of the U.S. Department of Health and Human Services or the U.S. Department of Agriculture. The regulations authorized by §§ 3.2-5212, 3.2-5213, and by this section shall be adopted in accordance with the Administrative Process Act (§ 2.2-4000 et seq.).