When a sow develops chronic catarrhal uterine inflammation, she usually does not experience systemic symptoms after the disease. Sometimes her body temperature may be slightly higher, but her appetite and milk production may decrease, and her estrus cycle may be abnormal. Occasionally, she may experience normal estrus but infertility due to repeated mating. When washing the uterus, the refluxed fluid may be slightly turbid, like clear nose fluid or rice washing water. It is difficult to diagnose it solely by observation. Using a pig ultrasound machine to examine the sow's uterus, the uterine wall may become thicker and the contents of the uterus may increase.

Sows develop chronic catarrhal suppurative uterine inflammation, which can cause mild systemic reactions, abnormal estrus cycle, and gradual weight loss. Irregular echogenic structures can be observed in the uterus using a B-ultrasound machine, with thin yellow brown or gray white pus continuously discharged from the vulva. Even vaginal discharge often adheres to the vulva, nodes, and tail root, and can form dry scabs.

Pig B-ultrasound machine image

Chronic purulent uterine inflammation occurs in sows. After the disease, sows often have secretions discharged from the vulva, which are mostly gray white, yellow brown, and gray when lying down. Irregular echo structures resembling clouds can be seen on the B-ultrasound machine. Sometimes some purulent secretions can adhere to the skin and tail root around the vulva, forming thin scabs after drying. When washing the uterus, the reflux fluid is very turbid and sometimes contains yellow pus.

It is relatively difficult to diagnose whether a sow has chronic uterine inflammation as mentioned above. Diagnosis based solely on vaginal secretions can easily lead to misdiagnosis. Using tools such as pig ultrasound machines can make a good judgment. For sows suspected of having uterine inflammation, it is necessary to collect an appropriate amount of secretions from the lower part of the tail root. It is also better to use an endoscope to collect secretions from the vagina. By understanding the reproductive cycle, odor, and systemic symptoms of the secretions, and observing them under a microscope, diagnosis can be made. Of course, using a Pig ultrasound machine for diagnosis is a more scientific method.

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