veterinary B-ultrasound imaging has the characteristics of being fast, intuitive, accurate, and non-destructive. In clinical applications, veterinary B-ultrasound can clearly display various cross-sectional images of various organs and surrounding organs. Since the images are full of solidity and close to the real structure of anatomy, the application of veterinary B-ultrasound can make an early and clear diagnosis.

In the past decade, my country has made rapid progress in Veterinary Ultrasound imaging technology, which has been directly applied to pregnancy and reproduction, greatly promoting animal husbandry production. Its technical means have also transitioned from the original A-type and D-type ultrasound to B-type ultrasound imaging, echocardiography, etc., and its application range has also expanded to clinical applications in a variety of animals and diseases.

With the advancement of science and technology, the functions of veterinary B-ultrasound diagnostic instruments are becoming increasingly powerful, and veterinary B-ultrasound is being used more and more widely in dairy cow reproduction. Research on veterinary B-ultrasound in the examination of dairy cow reproductive organs has also made great progress. Veterinary B-ultrasound is mainly used for the examination of dairy cow reproductive organs by veterinary B-ultrasound rectal exploration. Compared with the traditional rectal examination method, the veterinary B-ultrasound rectal exploration method has the characteristics of simple operation, easy to master, no damage to the body, high accuracy, etc., and has great advantages.

At present, ultrasound real-time image examination can be used for pregnancy diagnosis of dairy cows, determination of estrus and optimal ovulation time, identification of twins, sex identification, pregnancy examination, reproductive tract diseases, ovarian cysts, the effects of drugs (hormones) on reproductive organs, determination of gestational age, observation of corpus luteum status, uterine involution and ovarian recurrence, etc. It shows the good application prospects of ultrasound technology in the field of animal reproduction.