Iowa Code § 166A.6

Market operators and dealers in sheep shall use satisfactory dipping facilities approved by the department and shall maintain records which show the true origin of the sheep including name and address of the seller or consignor, number, date of receipt, date of dipping, and including all certificates, permits, waybills, bills of lading for each consignment of sheep consigned to and leaving the market or dealer’s premises. All records shall be retained for a period of one year and made available upon demand by a representative of the department.