Squeaky,
The Purina® Antler Advantage® Deer 20 ARS is pretty close to the specs of the DD feed your using. Can source locally at the Co-op in Andalusia and Opp.

NutrientMin / MaxAmount
Crude ProteinMIN20.00 %
Crude FatMIN2.00 %
Crude FiberMAX13.00 %
Calcium (Ca)MIN1.40 %
Calcium (Ca)MAX1.90 %
Phosphorus (P)MIN0,75 %
Vitamin AMIN10,000 IU/LB
PotassiumMIN1.00 %
Salt (NaCl)MIN0.40 %
Salt (NaCl)MAX0.90 %