To prevent the use in intrastate commerce of adulterated meat, meat food products, poultry, and poultry food products, the commissioner shall appoint inspectors and have them examine and inspect all animals before the animals enter a slaughtering, packing, meat canning, rendering, or similar establishment in this state in which slaughtering of animals and preparation of meat, meat food products, poultry, and poultry food products are conducted solely for intrastate commerce. Animals found on inspection to show symptoms of disease must be set apart and slaughtered separately from other animals. The carcasses of those animals must be carefully examined and inspected under rules of the commissioner.