California Code, Food and Agricultural Code (Formerly Agricultural Code) - FAC § 18727

(a) Any person that engages in intrastate commerce in the business of slaughtering any livestock or poultry, or preparing, freezing, packaging or labeling, buying or selling (as brokers, wholesalers or otherwise), transporting, or storing any livestock product or poultry product which is intended for human or animal food.

(b) Any person that engages in intrastate commerce in the business of rendering or in the buying, selling, or transporting of any dead, dying, disabled, or diseased livestock or poultry, or any part of the carcass of any such animal (including poultry) that died otherwise than by slaughter.