
I'm not comparing complete to a natural diet, no large breed puppy food makes the claim that it's protein level is reduced compared to a dogs natural diet.
I don't know the protein level of a
natural diet, but I know the protein level of tripe is approx 15% & that is a
natural food - much lower than 26% for complete food (wet or dry doesn't make a difference as the feeding guidlines are for dry food, so if you feed 100g of dry @ 26% protein *, then soak it, the dog will be consuming 26g protein) - *26% of 100g is 26g
I can understnad you not feeding your dogs less than 26% protein, but they are not a giant breed, and as far as anybody experienced in the breeding & raising of giant breed is concerned, 26 % protein is too high.
The bigger the dog the lower it's energy requirements are, protein being a major source of energy. The basal metabolic rate (basic energy requirement/expenditure)is related to total body surface area (somthing to do with heat loss), the bigger the dog the lower the ratio of suface area to body weight. Excess protein, as well as adding to already rapid growth & causing growth problems, is degraded & excreted by the kidneys, putting axtra strain on them too.
Giant breeds have very different nutritional requirements than smaller breeds dogs, if growth is encouraged in any way by too much protein, calories or excess minerals it can be very damaging.
The dog food companies actualy lower the levels of phosphorous & calcium (for bone growth), so they are trying :) Beta puppy large breed has a higher calcium & phosphorous content than thier standard puppy food as does arden grange.
All the advice I have given is in relation to giant breeds, from my own bad experience and from extensive research via experienced breeders. It is not relevant to any other sized breed including breeds classed as large. I am not trying to 'convert' anybody I am simply conveying breed specific advice.