| The prenatal paraplegia of dairy cows is mostly caused by pregnant cows in the middle and late pregnancy of 3 to 5 pregnancies and pregnant cows with old, weak and unbalanced nutrition. It is a disease of motor dysfunction caused by a sharp drop in calcium and phosphorus concentrations in sick cow blood. The main feature of this disease is that in the early stage of the disease, the sick cow cannot stand for a long time, alternate steps, and finally develop to the general weakness, lying down and so on. |