I have feed calves before with a bottle, but that was a long time ago and my dad always had the bottles ready for me. I'm getting a calf this morning. She was a twin and the momma doesn't want to take both of them. She was born on the 16th of March. How much do I start feeding the calf. I bought a 50lb bag of milk and a bottle. She probably weighs 40-50 lbs the owner said. Also how much milk do I mix up. The bag was torn a little and can't read the instructions. Lost in Ks. Its been 15 years since I've had a baby calf around.