Okla. Stat. tit. 2, § 2-9-139: Payment for purchases of livestock for slaughter

A. 1. Unless agreed to in writing between the owner and the

purchaser, the agent, or representative of the purchaser for each

transaction, it shall be unlawful for any person who purchases

livestock for slaughter, whether acting individually, as agent, or

representative of another, to fail or refuse to make payment by

negotiable check or wire transfer of funds to the owner, or the

representative, agent, or assignee of the owner for the livestock on

the business day within which the ownership of the livestock is

transferred within the State of Oklahoma.

2. If the transfer of ownership is accomplished after normal

banking hours, the payment shall be made in the manner provided not

later than the close of the first business day following the

transfer of ownership.

3. For the purposes of this section, if livestock is sold and

purchased on a grade and yield basis, the transfer of ownership

shall be deemed to have occurred on the day when the grade and yield

is determined.

B. Payment for livestock purchased for slaughter shall be made

by negotiable check or wire transfer of funds and shall be drawn on

a banking institution within the Federal Reserve District where the

transaction takes place, unless agreed to in writing between the

owner and the purchaser or the agent, or representative of the

purchaser.