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DNA Sire Requirements
All Purebred litters recorded with NSR since July 2004 are required to be sired by a boar that is negative of the Stress Gene. If you have a boar that you are using to breed sows within your herd, a Stress Gene test must have been completed prior to recording litters.
To fulfill these requirements, you can order a DNA card from the National Swine Registry for $4. Once you receive the DNA card, you will notice there are 4 circles on the DNA card. Please get DNA in all 4 circles. The most preferred form of DNA is blood, because it lasts longer on the DNA card and is much easier for the lab to read. Another acceptable form of DNA is semen. If you choose to submit semen as DNA, you must use raw semen that does not have any extender in it. Once you [ … ]