Microphase Powder 30lb pail for Horses. Does your horse get fat on grazing alone? Must you limit his time on pasture or feed him only hay? Micro-Phase is a great way to ensure your horse gets all of the nutrients he needs to stay healthy. Micro-Phase contains the vitamins and minerals not found in grass or hay with no extra calories. And, your horse will eat it right out of your hand! Guaranteed Analysis per 4oz Calcium (min.) 3 g Phosphorus (min.) 1.5 g Copper (min.) 136 mg Selenium (min.) 1.8 mg Zinc (min.) 400 mg Vitamin A (min.) 40,000 IU Vitamin D (min.) 4,000 IU Vitamin E (min.) 720 IU Thiamine (min.) 24 mg Choline (min.) 650 mg Folic Acid (min.) 12 mg Niacin (min.) 120 mg Pantothenic Acid (min.) 50 mg Riboflavin (min.) 40 mg Vitamin B12 (min.) 120 mcg Feeding Instructions: Horses at maintenance, barren mares, ponies, miniature horses with Light training - ½ scoop per day (2 oz) Yearlings, pregnant or lactating mares, stallions with - ¾ scoop per day (3 oz) Foals, weanlings, lactating mares (first 3 months), pregnant mares (last trimester) - 1 scoop per day (4 oz) From Kentucky Performance Products.