Agreed, the calcium/phosphorous ratio is extremely important, and we know first hand from having not gotten it right with Butter when we first started supplementing with raw food.
I use calcium citrate rather than bone meal because bone meal contains phosphorous as well as calcium. Multiple sources state the ratio should be 1:1 or 1.2:1 for calcium/phosphorous. We have a copy of
Nutrition for Dummies that we refer to often (be sure to check for grains like millet & oats which are high in phosphorous) and you can also check with the government online
USDA National Nutrient Database lists alphabetically or by nutrient weight:
Nutrient Data Products and Services
by nutrient
Nutrient Data Products and Services http://www.nal.usda.gov/fnic/foodcomp/srch/search.htm.
Butter has been on an elimination diet for weeks because of a severe allergic reaction, which we originally thought was a food allergy but have narrowed down to fungi and plants in the aster family outside. Because of cross-reactivity, we've continued limiting his diet. Maintaining a balance is challenging, and I'm still not sure we're getting it right.