As used in this part, the term: (1) “Animal shelter,” “nonprofit pet sterilization clinic,” “pet sterilization services,” and “shelter medicine” shall have the same meanings as set forth in Code Section 20-3-518.8. (2) “Board” means the State Veterinary Education Board created under Code Section 20-3-518.2. (3) “Commissioner” means the Commissioner of Agriculture. (4) “Department” means the Department of Agriculture.