|Barked: Tue Oct 30, '12 12:13pm PST |
|I can only relate it to my experience with toy poodles and PRA. So many lines are affected that type and other good stuff was being lost in the search to find clears to breed.
My first toy, Ali, finished her Championship quickly with four majors and was deemed extremely worthy to breed. She tested as a carrier for PRA. She was still bred and had three litters. In all three cases, she was bred to clear males, knowing that NONE of the pups could ever be affected and that any I sold would be spayed/neutered. Those I kept for show were tested and again, if they were carriers, would only be bred to clears.
I did not keep ANY males that were carriers as I have much less control over the puppies they may produce...it is pretty much up to the owner of the bitch to make sure the pups are all tested and/or the pups are spayed/neutered.
Unfortunately, the incidence of these issues is quite common in MANY breeds and, with the advent of DNA testing, it is now possible to not have to throw out the baby with the bath water.
I am currently awaiting the birth of a Frenchie litter. The DNA test for juvenile cataracts was not developed until several years ago and it turned out that her grandfather was a carrier (determined when one of his litters produced a pup with juvenile cataracts years ago prior to development of the testing). Because it is extremely expensive for this test and I am only going to breed this girl once, I chose to breed her to a Clear sire and will test any pup I keep for show/breeding. Again, they cannot have the disease, they can only be a carrier so it is a pretty safe thing to do, especially since my bitch has a statistical probabilty of less than 50% to be a carrier since her granddam was clear (determined by test breeding) and her sire was also clear, (again by test breeding).
The sire of this expected litter, also mine, was the ONLY still living one out of his extremely popular sire (who, based on what he produced, was likely to have been AT LEAST a carrier), to be alive when the test was developed and he was tested clear so it was also important to me to be able to keep him in my line.
Edited by author Tue Oct 30, '12 12:26pm PST
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