Infertility is the inability of an organism to reproduce by natural means.
It is caused by
.Poor cow nutrition
.Genetics of an organism
The infertility is mainly caused due to deficiency of some minerals and vitamins in the cow food.
Calcium,Phosphorus,Magnesium, Potassium,Sulphur,Cobalt,Copper,Iodine,Sodium , Selenium and Zinc are micro nutrients of animal food.Zinc and Cobalt dont cause problems in fertility of cow.
The deficiency of other minerals like Calcium,Phosphorus,Selenium,Zinc, Magnicium and copper can cause infertility
The deficiency of vitamin E cause retained placenta and a cow with deficiency of vitamin D does not show heat symptoms