Yes they can buy them.
and their NPIP certification ends as soon as those eggs are on property, until they are next Certified [there is a tiny excpetion - 145.4(d)]
Except as provided by this paragraph, participants in the Plan may not buy or receive products for any purpose from nonparticipants unless they are part of an equivalent program, as determined by the Official State Agency. Participants in the Plan may buy or receive products from flocks that are neither participants nor part of an equivalent program, for use in breeding flocks or for experimental purposes, under the following conditions only:
(1) With the permission of the Official State Agency and the concurrence of the Service; and
(2) By segregation of all birds before introduction into the breeding flock. Upon reaching sexual maturity, the segregated birds must be tested and found negative for pullorum-typhoid and any other disease for which the flock into which the birds are being introduced holds a disease classification. The Official State Agency may require a second test at its discretion
Sincerely, an NPIP participant. See my Sig, below. Been at this a couple years, NPIP from the start. Working on a Landrace.
