I have been raising orphan calves on bottles for years and I have finally found a nurse cow but I am getting lots of advice and I'm not sure what to do. Some people say to keep the calves penned and turn the cow in for nursing in morning and afternoon. Some say to let the calves stay in the pasture with her. I just want what is best for the cow and calves. Can you help me. They will be in a five acre pen if they are turned out with her our place has to many places for a calves to get lost for them to run out with the other cows.