N.C. Gen. Stat. § 106-410
No swine, except those for immediate slaughter, shall be removed from any public livestock market except in accordance with regulations adopted by the North Carolina Board of Agriculture. All swine removed from any public livestock market for immediate slaughter shall be identified in a manner prescribed by regulation adopted by the North Carolina Board of Agriculture and the person removing same shall sign a form in duplicate showing the number of hogs, their description and where they are to be slaughtered or resold for slaughter. Slaughter hogs may be disposed of in one of the following ways:
Swine sold for immediate slaughter shall be used for no other purpose unless prior written permission has been secured from the State Veterinarian or his authorized representative. No market operator shall allow the removal of any swine from a market in violation of this section.
Swine for breeding or feeding purposes shall not be resold in a livestock market for other than immediate slaughter within 14 days of prior sale at a livestock market unless they are identified as having been previously sold swine at the time of resale. Such identification shall contain the date and place of the prior sale and shall be furnished in writing to the market operator by the seller of said swine.
Provided, however, that the Commissioner of Agriculture may permit swine to be shipped out of the State of North Carolina, under the same conditions as if said swine were being delivered for immediate slaughter, for immediate delivery to holding or feeding lots in any other state when he determines that said holding or feeding lots are being operated in compliance with the laws of said state and the rules and regulations promulgated thereunder.
N.C. Gen. Stat. § 106-410