starsenchis
Posted : 3/26/2009 1:53:28 PM
Protein levels are not important when picking out a large breed dog food, it is calcium and phosphorus that need to be looked at. Large breed puppy foods are good, as are some ALS foods- but not all! Canidae ALS, for example, is VERY high in calcium and I would not feed it to a large breed dog. Same with Merrick Adult ALS formulas, Timberwolf, Innova, Solid Gold...
I would find a food on this chart that has about 300 mg Calcium per 100 kcals and about 400 kcals per cup: http://members.cox.net/starsen/CALCIUMDRY.html
300 mg Ca/100kcals is the recommended level of calcium per NRC for growth. It is hard to find foods with these levels because the cheaper high ash chicken meals bring calcium levels up considerably, so the only foods with nice moderate calcium levels are going to be either expensive foods that use low ash meals, OR foods that don't use a lot of meat in them to begin with.