(2) Cows should pay attention to vaginal bleeding and forced state within 12 hours after delivery to prevent birth canal bleeding and uterus eversion. If the cow works hard, check the birth canal for abnormalities. If there is no abnormality, diazepam injection can be injected.
(3) Observe the discharge of fetal membranes and the infection of birth canal and vulva within 3 days after delivery. If the fetal membrane cannot be discharged or is not discharged completely for more than 24 hours, it should be handled in time. At the same time, observe whether there are symptoms of postpartum paralysis.
(4) Observe the changes of lochia within 7 days after delivery; Obstetric examination was performed on postpartum 14 days, mainly to observe the cleanliness of vaginal mucus; After 20 days, rectal examination of uterine contraction and ovarian changes, such as ovarian static, metritis and so on. Should be treated in time, and pay attention to whether there is estrus reaction.