Bovine uterine prolapse occurs when the bovine uterus protrudes after calving. It is most common in dairy cattle and can occur in beef cows occasionally with hypocalcaemia.[1] It is not as commonly seen in heifers, but occasionally can be seen in dairy heifers and most commonly Herefords.[citation needed]
Uterine prolapse is considered a medical emergency that puts the cow at risk of shock or death by blood loss.[2] Factors during calving that increase the risk of uterine prolapse include: calving complications that cause injury or irritation of the external birth canal, severe straining during labor, and excessive pressure when a calf is manually extracted.[3] Non-calving factors include nutrition problems such as low blood calcium, magnesium, protein, or generally poor body conditions.[4]
In a complete uterine prolapse, the uterine horns also come out. When this happens, the uterus will hang below the hocks of the animal.[1] When the uterus hangs below the hocks, the cow may lie on, step on or kick the exposed tissue, which increases the risk of rupturing a major artery.[5] The uterus can become easily infected as it bruises easily and can become covered with manure.[5]
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