
Monica Von Heimendahl did point out at a recent seminar that even though you may get a sample good enough to store that in her experience older dogs semen was of much lower quality once defrosted (forget the technical term), and that you really need to store from young dogs at two to three years old. If subsequently the dog does not live up to earlier promise, pass all health tests etc, it can be discarded.
I think the Kennel Club should look at providing a storage facility for breeders, as a valuable resource for the future, like the seed bank, so should a breed go awry it can go back to an earlier time.