Starting a new thread to continue the discussion of the importance of genetic diversity in the breed. It often comes up when discussing the addition of Native Stock that the breed needs "new genes" in order to survive the test of time. Here is my post on that subject.
Are you really adding genes if you are just going to quickly breed away from what is added?
In order to have a significant impact, new dogs have to make significant contributions, percentages, of pedigrees in a breeding program. If what you are adding has so many faults that your next few steps is to breed to away from it to fix those faults then you are not truly adding anything new, it will be washed away quickly in the next couple of generations.
It is in the best interest of the breed that we select dogs to add to the studbook that are most likely to be used by many different breeders in different combinations. Though we have now on several different occassions added new founders, we seem to whittle them down so that only a few have signifcant impact on the breed within 20 years time. Look at the 87/88 imports and see how many of those are no longer represented in the modern population. We need to add dogs with traits that we want to keep, otherwise we get the feel good sensation of doing something right without the actual benefit.