Can i just say, it has been SO interesting reading all of this, and very educational
I personally can see no reason not to test for fanconi before breeding. Theres is a relatively cheap and non-invasive test available so i cant understand why breeders would not be making the most of it.
We have the same problem in my other breed, pugs. The breed is plagued with hemivertebra (a spinal deformity that can leave the dogs paralysed), my very first pug Delilah has it and it is a constant worry, at the back of your mind the whole time as I never know when i might find her unable to walk. There is no test for it as such (so in reality, basenji breeders are much more fortunate!) but you can x ray for the problem and then you should take any affected dogs out of the breeding programmes. But it is not happening and i see puppies in the ring now and you can tell that they have it from the way they move and hold themselves. Breeders STILL deny that hemivertebra is not a problem in the breed (we have even been accused of lying about my pug having it!!!!!!) and a worryingly large number still refuse to x ray for it… And its not the breeders that will get the heartache, its the owners.
I personally believe, as a breeder of other breeds, that it is the breeders responsibility to do everything possible to ensure that they are producing healthy puppies and if there are tests available they should be using them