THE trick with understanding the tables and knowing what is available in a raw diet (from global nutrient tables is that many of the minerals in the aafco tables are expressed as mg/kg. While meat and offal nutrient tables are just expressed as mg, micro grams etc per 100g or food.
"Minimum recommended daily amount of a tabled nutrient in mg/kg of DRY food consumed." Ref 5.
% Affco conversions
Example: Affco has minimum requirement (adult maintenance of) 0.6% Calcium.
100g Beef has 6 mg Calcium per 100g, Beef is 70.5% water.
That means the Calcium % in Dry beef is:
(6/ 100,000) x 100 x (100/(100-70.5))
= 0.006 x 3.38 = 0.02% well below the 0.6% minimum requirement. That is of course why we add raw bone to their diet, and make sure that the Ca:P ratio is correct. More on that later.
This aafco value (mg/kg) Calculation
Example: Affco has minimum requirement (adult maintenance of) 80mg/kg Iron. (NCA is 32 mg/kg)
100g Beef has 2.4 mg Iron per 100g, Beef is 70.5% water.
That means the Iron mg/Kg in Dry beef is:
(2.4 x 10) x (100/(100-70.5))
= 24 x 3.38 = 81.12 mg/kg Close to the AAFCO minimum requirement.
for whole article and references.