I love watching The Incredible Dr. Pol. He is very typical of a large animal vet. I have grown up around it most of my life and have to laugh at the people that are freaking out about it not being sterile. Respectfully laughing!!
When you have a calf or a foal that is stuck, the last thing you are thinking about is a sterile environment. The number one priority is getting that baby out before you lose both momma and baby. A lot of the time you end up losing the baby but can save the mom. It's sad, yes, but part of a ranchers life. Most of what a large animal vet does would appall most city folks.