§ 87. Payments for animals killed. The commissioner shall determine all claims which may be presented to him for indemnity to owners of animals killed by the state under the provisions of this article, and shall file in his office a certificate of his determination and, provided the claim is determined complete, shall within five days of having received the claim, issue his order for the amount due to the comptroller for payment. All claims allowed shall bear interest computed as provided in section one hundred seventy-nine-g of the state finance law. A claim shall be considered an invoice within the meaning of the provisions of article eleven-A of the state finance law. Anyone having a right of reimbursement pursuant to the provisions of this article shall be deemed to be a "contractor" having a "contract" with a "state agency" as such terms are defined in section one hundred seventy-nine-e of the state finance law. The commissioner shall issue his order for the amount due as determined by the certificate, which amount shall be paid from the treasury, on the warrant of the comptroller, out of moneys appropriated therefor.