In my opinion, new born calves get along just fine without any interference from their owners. Our mommas calve out in the pasture and are in charge of raising their calves. When we pen and work the cattle in the spring, we will cut, tag, vaccinate and brand the calves as needed, but not before. I have never applied iodine to a new born's navel and I have only very rarely had to treat a navel infection. I will intervene only when necessary and cull any cow that can't perform her job of raising a healthy calf every year. In my opinion, a newborn should not need shots, tags, vitamins or bands. They get everything they need from their momma. And they sure don't need some curious human getting between then and their mother. New mother cows can be as dangerous as any bull. Just my opinion based on raising a lot of calves over a lot of years. They are very hearty, robust animals that can usually survive just fine on their own. Just keep good grass in front of them and let them do the rest.