Here in Canada, all Shorthorn sires have to have a DNA profile on file before any calves can be registered from them. This rule has been only in place for less than two years and it has already identified several calves who had the wrong sire listed on their pedigree. All ET calves have to be DNA parentage verified. All calves resulting from a situation where a female was AI'd and then turned out with a bull shortly after the AI breeding, also have to be DNA parentage verified, to determine which is the correct sire. Most other breeds in Canada have the same practice.