DNA Stress Test Policy
As a requirement for registration of litters that are farrowed on or after July 1, 2004, all sires (Duroc, Hampshire, Landrace and Yorkshire) must have a negative stress status on file (by DNA test or parent verification) before the litter can be registered. No animals will be grandfathered in with this policy.
1. As of April 1, 1998, no known stress positive or stress carrier animals will be allowed to be exhibited or sold at any NSR-sponsored event. (If an exhibitor places this information on his pen card or states that this animal is a stress positive or a stress carrier, he will be asked to remove this animal from the barn, and he will not be allowed to exhibit or sell this animal.) If any animal sold at a NSR-sponsored event is found to be stress-gene positive or a carrier of the stress gene, the purchaser has the right to receive a full refund of the purchase price.
DNA testing for the stress gene must be done within 90 days of the sale, and all cost associated with this test must be paid by the purchaser. The seller has the right to review the test results and the right to re-test the animal at a laboratory of his choice. Cost associated with the re-test by the seller is at the seller’s expense. There will be no refund of NSR commission from stress-positive or stress-carrier animals.
2. As of Jan. 1, 2000, the NSR requires the DNA stress gene status of A.I. sires to be declared on all A.I. Certificates issued for the registration of litters. All A.I. Certificates issued after Jan. 1, 2000, must include the HAL 1843 test status of the sire, regardless of when the boar was placed in service. Test results must be reported as one of the following: 1) nm=normal, 2) mm=carrier, or 3) dm=homozygous positive. The NSR also recommends that owners of A.I. sires make this information available in their promotional literature.
In addition to the previous steps, the following policy was adopted by the Board of Directors of the American Yorkshire Club, the American Landrace Association, the United Duroc Swine Registry and the Hampshire Swine Registry with the effective dates indicated.
3. Any Yorkshire or Landrace that is farrowed on or after Jan. 1, 2000, that is proven to be a stress positive or stress carrier by a documented DNA test from a certified lab, will have its pedigree cancelled. Any Duroc farrowed on or after Jan. 1, 2001, that is proven to be a stress positive or stress carrier by a documented DNA test from a certified lab, will have its pedigree cancelled. Any Hampshire farrowed on or after Jan. 1, 2002, that is proven to be a stress positive or stress carrier by a documented DNA test from a certified lab, will have its pedigree cancelled. The purchaser has the right to receive a full refund of the purchase price. DNA testing for the stress gene must be done within 90 days of the sale, and all cost associated with this test must be paid by the purchaser. The seller has the right to review the test results and the right to re-test the animal at a laboratory of his choice. Cost associated with the re-test by the seller is at the seller’s expense.
Any warranty regarding the stress gene status of the animal is solely that of the seller and not that of the American Yorkshire Club, American Landrace Association, Hampshire Swine Registry or the United Duroc Swine Registry. The American Yorkshire Club, American Landrace Association, Hampshire Swine Registry and United Duroc Swine Registry assume no liability in connection with such warranty by the seller.
