Animal B-ultrasound examination of testicles: Testicular ultrasound is a valuable diagnostic tool for testicular tissue diseases in livestock. Using animal B-ultrasound 7.5MHz line scan probe, the testicles show homogeneous, moderate echo structure, concentrated in the testicular septum, with strong echo lines in the longitudinal image and dots in the transverse image. The testicular sac and skin images are dense strong echo lines surrounding the testicular substance. The image between the two layers of the tunica vaginalis is a thin, echo-free layer (liquid). The image of the tail of the epididymis is very different from that of the testicle, with weakened echoes, the epididymal head has a uniform texture, weak echoes, and the image of the epididymal body is unclear. The plexus is easy to identify and presents many curved ultrasound-transmitting tubular structures. Epididymitis, spermatic cord cysts, testicular cysts, abscesses and scrotal hernia ultrasound examinations can make diagnoses. The ultrasound imaging characteristics of cryptorchidism are lower density than the normal testicles in the descended scrotum, which is easy to identify.

Animal B-ultrasound examination of dairy cow teats: Ultrasound examination of dairy cow teats, using a 5MHz probe to directly probe the udder teat or place the teat in water in a plastic cup, with the probe outside the cup. The ultrasound image of the milk pool is an echo-free empty area, in which the milk presents a special image pattern "Snowstorm"; the blood vessels, teat ducts, and teat walls of the venous plexus can be clearly seen. Ultrasound diagnosis examines the scope of teat stenosis or other abnormalities in dairy cow teats. 60 of 63 dairy cows were diagnosed with teat stenosis. Using a 5MHz line scan probe, ultrasound diagnosis determines the scope and location of teat stenosis and teat mucosal tear.

Ultrasound examination of the tongue: Ultrasound examination of normal and abnormal tongues of dogs, cats, and horses. Using 5.00MHz, 7.50MHz, and 10MH scanning probes, the tongue parenchyma, lingual artery, the boundary between the soft and hard palate, the mandible, the body of the hyoid bone, the tongue muscle layer, and the penetrating trauma secondary to foreign bodies and abscesses in the horse tongue can be seen. Ultrasound-guided surgery to remove tongue foreign bodies and drain pus during surgery. Ultrasound provides the echo characteristics and size of tongue tumors. Ultrasound monitoring of tongue injuries is beneficial to affected animals. Animal B-ultrasound is used for regular pregnancy monitoring to identify empty sows early to reduce feeding waste and increase economic benefits: the accuracy of diagnosing pregnancy after using B-ultrasound for early pregnancy monitoring has increased by at least 9 percentage points, and non-pregnant sows have been detected in time, avoiding "ineffective feeding". At the same time, B-ultrasound monitoring can accurately grasp the number of pregnant sows early and play a role in ensuring balanced production. The reason for the early discovery of a large number of empty sows was that they were infected with infectious diseases brought in by the introduction of boars. Timely measures were taken to reduce economic losses. B-ultrasound can also monitor ovarian dysfunction or disease, empty sows and uterine diseases, stillbirth and abortion, as well as boar testicles, accessory glands and other diseases. The use and utilization of these functions can detect abnormalities in time and take corresponding measures, thereby greatly improving the level of monitoring of pig health and improving production efficiency. Determine the backfat thickness and calculate the eye muscle area of pigs: The breeding farm can use B-ultrasound to accurately measure the backfat thickness and calculate the eye muscle area of pigs in vivo without damage, which greatly improves the scientificity and accuracy of breeding and selection.

Analysis of pregnancy of transgenic and cloned sheep: The pregnancy test of embryo transplant recipient white goats and natural mating sheep after transgenic or nuclear transplantation was performed using an ultrasonic tomography scanner equipped with a 5MHz rectal probe. The results showed that the accuracy of pregnancy diagnosis of test sheep 28 to 102 days after embryo transplantation was 100% negative (B-ultrasound judgment of non-pregnant sheep), and the accuracy of pregnancy diagnosis of natural mating sheep and nuclear transplantation recipient sheep was 100% positive (B-ultrasound judgment of pregnancy) and negative. Some transgenic recipient sheep had false positives due to fetal development arrest or miscarriage.

Collection of bovine oocytes by animal B-ultrasound guidance: Collection of bovine oocytes by animal B-ultrasound guidance is simple and reliable, with little damage to the bovine vagina and ovaries, and no adverse effects on the health and reproductive function of the cattle. The oocyte recovery rate was 41% (8/17) when the oocytes were collected twice from the same cow at an interval of 4 days within one week.

Application of animal B-ultrasound diagnostic technology in the industrialization of goat embryo transplantation: Ultrasound diagnostic technology has been widely used in pregnancy testing, pregnancy monitoring, superovulation and other aspects in mammal embryo engineering and genetic engineering research.