The quantity of breed dogs would be the same as before
you even CAN breed an AT RISK dog
The question is, will you do that...
What do percentage have DNA test already?Good question...based on dogs in breeding, retired breed dogs, or all dogs...
Will every breeder test their dogs?
Will all owners test their dogs
Will older dogs get tested too?
Will affected dogs get re-tested to see if they are really affected by PLL
If you can answer any of this question, please tell me 6 numbers between 1-49 and I will play lotteries this weekend

I even cant assume a percentage for this, but I surely will only breed with tested dogs