If you are going to feed raw, what's with the kibble added in the middle of it all? Not sure about that, that's a non-no to me, but that's just my opinion.
Now as for the egg, not every day. It's like this, you will find that ppl like Anne and others who feed eggs (and shells) to their dogs, will do so on a day when the dog is not getting their daily calcium from anything else, such as bones etc.
BUT, and this is a big but, bones are a huge portion of a truly raw natural diet.
Just my thoughts...