The 80% only applies to the AQPS horses in France. All other racehorses must have a higher percentage, most of them are infact 100%.
In order for a foal to be registered with Weatherbys as a racehorse, by the time it is 6 weeks old a blood sample taken from the foal and a DNA sample (hairs pulled from the mane or tail) from its mother must be sent away for testing. Weatherbys keep on file the DNA profile of all registered stallions so that they can cross-check to confirm parentage.
These tests have often thrown up interesting results - most often that the father of a foal is not who they think it is, and even that (in one case I know of) the mother was wrong! In that case two mares at the same stud had given birth on the same night, the following day they had been turned out for a few hours in the same small paddock and, as the maternal bond had not yet solidified, the two mares had "swapped" foals.
I've not been paying enough attention to the Paddy Power shop, but I suspect they are selling off some of their betting machines to make way for new ones!
In order for a foal to be registered with Weatherbys as a racehorse, by the time it is 6 weeks old a blood sample taken from the foal and a DNA sample (hairs pulled from the mane or tail) from its mother must be sent away for testing. Weatherbys keep on file the DNA profile of all registered stallions so that they can cross-check to confirm parentage.
These tests have often thrown up interesting results - most often that the father of a foal is not who they think it is, and even that (in one case I know of) the mother was wrong! In that case two mares at the same stud had given birth on the same night, the following day they had been turned out for a few hours in the same small paddock and, as the maternal bond had not yet solidified, the two mares had "swapped" foals.
I've not been paying enough attention to the Paddy Power shop, but I suspect they are selling off some of their betting machines to make way for new ones!

Then bollocks, Oddy's spotted it