Horses imported from Canada for immediate slaughter shall be consigned from the port of entry directly to a recognized slaughtering establishment and there be slaughtered within two weeks from the date of entry. Such horses shall be inspected at the port of entry and otherwise handled in accordance with § 93.306. As used in this section, “directly” means without unloading en route if moved in a means of conveyance, or without stopping if moved in any other manner.