I have a 14 year old Murray Grey cow that I milked after her first two calves. I left her calf with her 24/7 and milked out what she would give me each evening after work. We had a gallon of milk with 3 inches of cream on it every evening. I made cheese and butter and the kids had all the milk they could drink. She wasn't real happy about being milked at first, but she was halter broke and I had touched and rubbed her all over for most of her life, so I was able to tie her to a post and milk. Yes, she tested my reflexes a few times, but we did ok. Now, she's the cow that I milk colostrum out of as soon as she calves. Her calf drinks on one side and I milk out the other side. She doesn't have to be tied for that. She's just happy to be milked no matter who is relieving the pressure for her.