§ 528.2000 Deletion of exon 7 of CD163 gene in domestic pigs.
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Specifications.CD163Sus scrofa domesticus(a) Deletion of one (heterozygous) or two (homozygous) copies of exon 7 of gene1(abbreviated CD163ΔE7) in domestic pigs ().
Sponsor.(b) See No. 086205 in § 510.600(c) of this chapter.
Conditions of useIntended use.CD163Sus scrofa domesticus)DE7(c) —(1) Deletion of exon 7 of the gene in domestic pigs ( is intended to confer resistance to porcine reproductive and respiratory syndrome virus (PRRSV) in homozygous pigs. Pigs carrying one or two copies of CD163, and their offspring, are intended for breeding or to be used as sources of food.
[90 FR 40970, Aug. 22, 2025]
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