There are many problems that require immediate medical attention. Depending on the problem in question can be sent one or another vet, depending on factors such as proximity to the farm or the specificity of the problem, since in the case of large animals care is done on site most of the times, even surgery, because of the difficulty or inability to move them to a veterinary hospital. Additionally, rotas are set to cover the emergencies that arise out of hours.
In the large animal practice, the more likely clinical
emergencies are parturitions, uterine prolapses, indigestions,
colics, gorings, fractures...