From the perspective of improving the reproductive performance of cows, it is very important to properly raise and manage cows during the perinatal period. In the professional concept, the perinatal period generally refers to the period between 15 days before and 15 days after delivery for cows. The perinatal period is a key control point for the profitability of cattle farms and the productivity of cows.

During the perinatal period, cows tend to be lazy and prone to movement, with loose vaginal gates and an open birth canal. Various types of mucus often flow out. It is important to use ultrasound to check the condition of the uterus in imported cows. During this period, they are highly susceptible to bacterial infections and can cause uterine inflammation. Therefore, caregivers should drive the cows to exercise slowly on the playground twice a day, for about an hour each time. Cows in the perinatal period should have a dry and hygienic environment in their pens, and should be fed and observed carefully and thoughtfully to ensure that they have a healthy physique and sustained production capacity. Imported cows should also be regularly checked using ultrasound.

When a cow gives birth, strict disinfection must be carried out on the delivery room and the cow's rear drive. Unless there are special circumstances, the cow should be allowed to give birth naturally as much as possible. When it is necessary to assist with childbirth after diagnosis with B-ultrasound through imported cattle, the method of assistance must be appropriate to avoid damaging the cow's birth canal. During the fetal growth period, it is recommended to feed an appropriate amount of coarse fiber forage to avoid difficult delivery caused by a large fetus. Imported cattle should undergo ultrasound examination, and early measures should be taken when the fetus is too large.

There is a correlation between mastitis and uterine inflammation, so in daily feeding during the perinatal period, it is recommended to reduce the intake of juicy forage and protein feed to reduce the incidence of mastitis. Proper driving exercise for cows before delivery can increase their physical fitness, improve the natural delivery rate, and reduce the risk of uterine damage caused by insufficient exercise and the need for manual assistance during delivery, thereby reducing the conception rate of cows. For cows with retained placenta after delivery, appropriate administration of motherwort and psyllium or intramuscular injection of oxytocin can help with early expulsion of the placenta, thereby reducing the incidence of uterine inflammation in cows. Imported cows should be used for B-ultrasound examination of the uterine condition after delivery.

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