haha... one or two? haha...
You see, here's the thing with feeding animals like this. Dry food is everything your dog needs in a balanced amount. If you add raw meat to the mix your throwing off your balance. In order to counter this your dog is going to start eating alot of grass to get the necessary fiber it needs. Your going to be having some problems to deal with. The dogs weight fluctuations, the dog getting the runs from time to time and just generally his new diet is less nutritious than his old. Your just going to need to make sure that you keep an eye on what else your dog decides to ingest for nutrition supplementation that dog food gives that red meat doesnt.
hope this helps