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Medium quality ingredient - nutritionally adequate and unlikely to cause any problems e.g. fillers etc
Potato protein in dog food
Potato protein is a byproduct of potato processing and is used as a protein source in some dog foods. Although it is far less expensive, we don't think potato protein should be used as an alternative to meat in dog foods since the quality and digestibility of vegetable proteins tend to fall a long way short of those found in meats.