Here are the ingredients:
Crude protein (min) 12.0%
Crude fat (min) 2.50%
Crude fiber (max) 18.0%
Calcium (Ca) (min) 1.0%
Calcium (Ca) (max) 1.50%
Phosphorus (P) (min) .45%
Salt (NaCl) (min) .70%
Salt (NaCl) (max) 1.20%
Potassium (K) (min) 1.20%
Copper (Cu) (min) 8.0ppm
Copper (Cu) (max) 15.0ppm
Selenium (Se) (min) 0.10
Zinc (Zn) (min) 100.0ppm
Vitamin A (min) 2,000IU/lb
INGREDIENTS: Processed grain by-products, roughage products, molasses products, grain products, calcium carbonate, salt, propionic acid (preservative), vitamin A supplement, vitamin D-3 supplement, ferrous sulfate, potassium iodide, manganous oxide, cobalt carbonate, sodium molybdate, manganese sulfate, sodium selenite. Ruminant Meat and Bone Meal Free. 030C-T511F 21% roughage products.
Currently, he is on Purina Equine Adult. I couldn't find the ingredients online, sorry about that.