One of my cows calved Sunday about 11:00 am. The birth was normal, no problems. The calve is up and nursing. Mom is taking good care of her. Plenty of milk. Not the cows first calve. She is the first of our cows to calve this year. Being new to this I need some Information, Any advise will be most appreciated...The cow apparently ate the placenta. There is a small thin piece of placenta that is hanging from the cow. What is the normal time for this to detach. It's been 48 hours since birth. Also what vaccinations are recommended or necessary at this time. The cow and calve are with the other cows. Should they be separate. We live in central Alabama, Thank you.