The secretary shall establish, by regulation, good manufacturing practices, hazard analysis, and preventive control measures as the secretary determines are reasonably necessary to carry out the purposes of this chapter. The good manufacturing practices, hazard analysis, and preventive control measures, including verification and validation activities for all commercial feed and additives, including medicated feed premixes and medicated feeds, shall be based upon federal food and drug laws and regulations, unless the secretary determines that the federal laws and regulations are not appropriate to the conditions that exist in this state. The regulations adopted pursuant to this section shall ensure that drug usage

under this chapter shall not conflict with the provisions of Chapter 4 (commencing with Section 14200).