I feed primarily necks and have found that 40% neck is plenty. Any more than that and she's pooping rocks. So most often my proportions are 40/55/5. You have to make a judgement on the type of bone you are giving. Necks and backs are more bone than meat. Thighs and quarters are more meat than bone.
Seger vom Sitz von der Hose
Forever loved and missed.....Banshee
~The strength of one's opinion should not exceed their knowledge on the matter~