When used in this chapter, unless the context otherwise requires:
 1. “Agent” means a person engaged in the buying or soliciting in this state of livestock for slaughter exclusively on behalf of a dealer or broker.
 2. “Animals” or “livestock” includes cattle, calves, swine, sheep, goats, turkeys, chickens, or horses.
 3. “Dealer” or “broker” means any person, other than an agent, who is engaged in this state in the business of slaughtering live animals or receiving, buying or soliciting live animals for slaughter, the meat products of which are directly or indirectly to be offered for resale or for public consumption.
 4. “Department” means the department of agriculture and land stewardship.
 5. “Person” means an individual, partnership, association or corporation, or any other business unit.
 6. “Secretary” means the secretary of agriculture.