I worked summers at
this farm when I was a kid. They had several cows, among other animals. The mother cow was Rose, and she was white with black spots. She had a calf Aggie, and another calf a year or two later named Charlie. Aggie had the same coloring as Rose, and Charlie was brown. (The father
cow bull was from another farm so I don't know what he looked like.) I learned how to milk
goats, but we did not milk the cows (it had to do with licensing or the health code or something along those lines). The cows' raison d'etre was supposed to be so we could learn about the lifecycle and the connection between animals and the environment and food and all that.
When Aggie was about two the people who ran the farm had to decide what to do with her. They were talking about selling her as a breeder because she was "such a beautiful cow." (I don't know if I'd go that far, but we kids all loved her because we were there when she was born.) Ultimately, though, they decided to butcher her because that was supposed to be the cows' purpose, and that fall at the harvest fest they were selling Aggie burgers.

One of the reasons I became a vegetarian. Charlie was later butchered too, if I remember correctly, but it wasn't quite as traumatic.
As a completely random aside, in the bottom picture on the farm's homepage, the guy on the far right was my first boyfriend ever. This was like 15 years ago... I can't believe they still use that picture in their marketing materials. It was originally taken for a brochure, long before they (or anyone else) had a website.
EDIT:
Found a picture! Rose is the one in the back.