According to the information of rural network, it takes about 280 days for cows to calve after mating, which takes about 10 months. Scientific nutrition and management of dairy cows in different periods, independent feeding and whole-course management of dairy cows in perinatal period, prevention and control of postpartum diseases and protection of their health.
After the calf is born 15 days, some green hay can be fed, but it needs to be cut into small pieces, then slightly humidified and softened with water. Calves can be supplemented with concentrate after birth 1 month. If the calf is strong and the temperature is suitable, it can be weaned early.