The Whole Dog Journal just put out an article on what AAFCO really is and how foods become AAFCO certified. Honestly, it's not what we were led to believe. Just because a food is AAFCO certified does not mean it is truly complete and balanced. Nor does it mean that it will not cause future problems. The feeding trial (1 of 3 ways to get AAFCO certified) is only 26 weeks and using one example, mineral excesses may take a year or more to cause health problems. Another way to become AAFCO certified is through a 'family member'. So if one of the formulas passed the feeding trial, all the other formula's no longer need to be individually tested. The AAFCO nutrient profiles allow for a wide range of values. According to the WDJ, it is far from being some sort of industry 'standard', or offering suggestions for optimum nutrition. They actually offer only broad guidance. Better than nothing and the WDJ suggests it at least gets a pet food maker into the ball park. The WDJ states "But in our opinion, it's farcical to qualify all the products with such a wide range of nutrient levels as 'complete and balanced' --especially with the common mistaken inference that all the products carrying that statement are somehow equal". I prefer to listen to holistic vets and vet nutritionists who have taken years to really study this.
As for high protein foods, like you said I do feel there are certain dogs that do need a higher protein food. But if you are feeding a kibble, then you would do better to go with a lower protein kibble imo. My understanding is the unhealthy effect a high protein diet has on the liver and kidneys (even producing struvite (sp?) crystals) is in direct correlation to how much water is being consumed as well. That's why when feeding a home cooked diet or one of the pre-mixes where you use fresh meat, not to mention the large quantity of water, a high protein diet is not only safe, but truly the healthiest. If feeding a high protein kibble, I would really urge a person to soak the kibble in water. Even then, if your dog is one to not drink much, I'd go with a lower protein kibble. I'm guessing, but have nothing to back it up with, if there is a need to go with a high protein commercial food for certain dogs who need a high protein diet, it would be better to go with canned. I'm just not sure if there is enough moisture in canned. However, canned in general is better then kibble.
As for high protein foods, like you said I do feel there are certain dogs that do need a higher protein food. But if you are feeding a kibble, then you would do better to go with a lower protein kibble imo. My understanding is the unhealthy effect a high protein diet has on the liver and kidneys (even producing struvite (sp?) crystals) is in direct correlation to how much water is being consumed as well. That's why when feeding a home cooked diet or one of the pre-mixes where you use fresh meat, not to mention the large quantity of water, a high protein diet is not only safe, but truly the healthiest. If feeding a high protein kibble, I would really urge a person to soak the kibble in water. Even then, if your dog is one to not drink much, I'd go with a lower protein kibble. I'm guessing, but have nothing to back it up with, if there is a need to go with a high protein commercial food for certain dogs who need a high protein diet, it would be better to go with canned. I'm just not sure if there is enough moisture in canned. However, canned in general is better then kibble.