Commercial swine not meeting purebred breeding-animal criteria — including feeder pigs and market hogs — represent a significant cross-border trade flow, particularly within integrated North American pork supply chains. USDA APHIS governs admissibility, and African swine fever country status is now the dominant admissibility variable, effectively limiting eligible origins to countries with robust ASF-free certification. Unlike purebred animals, breed registry documentation is not required, but health certificates and country-of-origin disease clearance remain mandatory. Admissibility is complex — consult a licensed customs broker or USDA APHIS before importing.

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