How to monitor dairy cows during the peripartum period and after delivery with B-ultrasound? The peripartum period, especially the postpartum period, is the period with the highest probability of reproductive tract infection in dairy cows, so it is particularly important to do a good job of feeding and management at this stage. B-ultrasound for cattle also plays a very important role in this stage. In the process of delivery of dairy cows, it is necessary to do a good job of disinfection and prevent birth canal damage. If the cow is in good physical condition and the delivery is smooth, try to let it give birth naturally and avoid artificial delivery to prevent damage to the birth canal. After delivery, it is necessary to use B-ultrasound for cattle to check its recovery. It is not recommended to use physiological saline containing antibiotics to flush the uterus after delivery. Because the uterus of dairy cows has the function of self-purification, as long as there is no damage to the reproductive tract and the invasion of a large number of pathogenic microorganisms, the reproductive tract will expel foreign matter and return to normal through the regulation of neuroendocrine. Of course, it is necessary to use B-ultrasound for cattle to check it frequently. If a large amount of flushing is done, it will destroy the acid-base balance of the reproductive tract mucosa and cause the potential for infection. It has been reported that timely supply of motherwort, liquor, brown sugar, bran water and high-quality hay to dairy cows after delivery can help them recover their strength, fill their rumens, and replenish sugar and calcium in time, which can promote the self-purification of the reproductive tract, and prevent the occurrence of postpartum paralysis, ketosis, retained placenta, mastitis and abomasum displacement. B-ultrasound examination of cattle is conducive to subsequent estrus breeding. Improving the reproductive efficiency of dairy cows is crucial for the efficient production of cattle farms, but this work cannot be done by breeders alone. The reproductive performance of dairy cows is affected by a series of factors such as feeding management, nutritional level, and health status. Each cattle farm should carefully analyze and summarize according to its actual situation, propose feasible supporting measures and implement them in earnest, so as to maximize the reproductive performance of dairy cows, improve the production efficiency of cattle farms, and maximize economic benefits. In this process, B-ultrasound for cattle plays a big role.

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