25.2. In addition to the requirements of section 23, the holder of a permit shall keep a copy of any prescription issued by a veterinary surgeon relating to the purchase of medications appearing on the list provided for in section 9 of the Veterinary Surgeons Act (chapter M-8) and used in the preparation of medicinal premixes; such copy shall be kept from the date on with the prescription is issued, for a period of 1 year following the date on which it is filled, including renewals.
He shall also obtain vouchers for each purchase of medications used in the preparation of medicinal premixes and shall keep such vouchers for 2 years from the date of purchase.