§ 1636d. Recordkeeping
(a)
In general
Subject to subsection (b) of this section, each packer required to report information to the Secretary under this subchapter shall maintain, and make available to the Secretary on request, for 2 years—
(b)
Limitations
Under subsection (a)(2) of this section, the Secretary may not require a packer to provide new or additional information if—
(c)
Purchases of cattle or swine
A record of a purchase of a lot of cattle or a lot of swine by a packer shall evidence whether the purchase occurred—