Vitamin E and Selenium are required to build the Immune system in the animal’s bodies as they play a role as “Antioxidants”.

Selenium deficiency in newborn calves leads to white muscle diseases and retains the placenta in newly calved cows. Vitamin E and Selenium play a major role in the treatment of mastitis as deficiency of any one of them may lead to an increased incidence of mastitis. Feeding of vitamin E may lead to a Newtropolic activity to kill bacteria observed at calving.

Most of the diseases in dairy cows occur at or just after calving as it is mainly due to immune suppression leading to susceptibility to infections. Prepartum immune suppression is mainly due to endocrine changes and due to ed intake of improper nutrients. Vit E is fat solvent vitamin not synthesized in tumen however  it is essential for dairy cattle as well as calves

Vit E required to maintain immune function prevents muscular dystrophy in young claves.

Vit E is required for the control of nerves, muscles, heart, rumen, and lungs.

Male fertilizing as sperm motility is also associated with SE and selenium deficiency leading to decreased conception rate in female cows. With the maintained level of blood selenium in cattle there are lesser chances of abortion