This does not make any sense to me...

I have never heard of this before, so I don't know anything about it other than I read it... and I can't see it as being an advantage of doing, instead of spaying/neutering for pets UNLESS the dog physically couldn't handle the surgery....

I am a breeder, and as a breeder, would I use it on my dogs I am growing out for showing/breeding??? Absolutely NOT! I have never worried about accidental breedings, because its really not all that dificult to keep your dogs seperated if you have half a brain!!... and IF I am keeping a dog for possible showing/breeding I certainly don't want anything running thru their system that could possibly affect fertility in the future.....

JMO...