
Do you not understand it's a case of much larger numbers here. If all litters/breeding pairs were to be tested like this, how would it be done, and at what additional costs?
There are over 40000 (forty thousand) Labrador pups registered with the kennel club each year, so some 6500 plus litters.
Decent breeders will already do the relevant health testing and more, those who are not bothered will simply sell unregistered puppies as so many already do, as there is a ready market for them.
If you increase the costs for good breeders, who still have to compete with the poor breeders re price so cannot recoup the extra expense as the public are simply not educated enough or prepared to pay much more for the 'real deal'.
It's already hard enough with the average cost of health testing just hips eyes, in my breed being £500, and other breeds require even more tests..