A custom farm slaughterer may slaughter an animal only on the premises of the present or first preceding owner of such animal, except as follows:

(1) An animal injured to such extent that immediate slaughter at the place of injury is necessary for humane reasons.

(2) Animals purchased for custom slaughter at any 4-H and FFA market stock sales and open class carcass contests where ownership of the carcass is retained by the entrant may be slaughtered by a custom farm slaughterer on any premise. The premises must be approved in advance by the local health district/department and the department. The fair representative must request approval for each operator they plan on using by submitting an application for special slaughter conditions to the department at least thirty days before any such slaughter is to be done.