American Stockman Selenium Block is a 50lb block specially formulated to meet the needs of selenium-deficient cattle. Selenium is a recognized antioxidant with a similar effect to Vitamin E. Features: Salt Min: 95% Salt Max: 98.5% Zinc Min: 3500 ppm Iron Min: 2000 ppm Manganese Min: 1800 ppm Copper Min: 280 ppm Copper Max: 420 ppm Iodine Min: 100 ppm Selenium Min: 90 ppm Cobalt Min: 60 ppm.
