JeanieK:
I applaud you for asking. I'm sorry that so many jumped to defensive mode. It's my personal opinion that there are no stupid questions and that one doesn't learn unless they ask. I think the intent was just that, to learn from experienced breeders. Although none of us would ever consider this possibility, I too would be curious if this was actually something that breeders practice. It's appalling to think that it is, but it's better to be educated then not.
Kudos to JeanieK for asking instead of possibly following what she read in a book because she was afraid to ask.