The traditional diagnosis of reproductive diseases mainly includes external observation and rectal examination.The external observation method is based on the external manifestation of the cow such as anestrus, long-term estrus, abnormal secretions, body condition, etc., combined with the data of the cow to diagnose it.The method is simple and convenient to implement; but because of its low accuracy and poor precision, the method can only be used as an auxiliary calculation method.The rectal examination method is currently the most popular diagnostic method for reproductive diseases. The method is to palpate the uterus, ovaries, etc. through the rectum after entering the rectum by the technician's hand.Although this technique is much more accurate than external observations and can make a correct diagnosis of general reproductive diseases, it still has limitations.For the endometritis, which is one of the most important factors affecting the reproduction of dairy cows, the detection rate is very low. It can be said that when the endometritis is very serious, the cow can be diagnosed by symptoms such as hypertrophy of the uterus and uterine ptosis.
Ultrasonic machine scans the uterus laterally in the rectum. The multi-layer structure of the uterus can be clearly observed, including the endometrium and uterine contents. Therefore, the uterus is regularly detected by B-ultrasound, and endometritis is detected early. In the case of mild symptoms, appropriate measures can be taken to improve the efficiency of treatment and provide a guarantee for the successful breeding and breeding of dairy cows.