HD, ED

[z Peronówki]

The successfull races have tested about 35% of population and its
very less for some true statistic. And dont forget, that lot of owners
make first a unoficially HD test and if it looks bad, then dont testing
oficially. So that real % is lower.
Pavel

HD is hereditary. But as you wrote we don't know how strong (scientists talk
about 25-55%) and which genes support it.

I think you've mention a very important thing which is still a problem:
breeder's honesty. It's impossible to eliminate genetic diseases without
knowing the affected dogs. For example: if information is missing and you
will choose a HD free stud dog you will never know if the dog had "luck" (he
is the only one in whole litter which is HD free and the rest of the
sibilings have HD) or maybe it's really relatively healthy dog (his
sibilings, parents and/or offsprings are also HD free). Maybe that's exactly
the reason why it's so hard to fight with displasia...

Greetings,
Margo