I don't really have an answer for you. Even my puppies will eat raw, bones and all, so I would be guessing as to why yours won't.
As to why your dogs are vomiting, etc., again I would be guessing as mine never did that (and I have fed hundreds of dogs raw).
One thing I will say is that you only fed part of the diet I recommended. I honestly don't think that has anything to do with the vomiting, but it's juat not a complete diet is all.
As a final thought, I do know raw isn't good to feed if your dogs have coccidia, so you might want to consider that as a possibility.
Jack





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