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