The Role of selenium and vitamin E in mastitis and reproduction of dairy cattle

Abstract

The literature would suggest that the selenium requirement for most species of livestock is between 0.05-0.3 ppm (mg/kg) of dietary dry matter. The current requirement for all classes of dairy cattle is 0.30 ppm. Selenium requirements are affected by dietary vitamin E intake, by disease process being prevented, and by the concentration of dietary antagonists including sulfur, iron, copper, and calcium.