Milking Barn, Old Dairy, Parlour?

[bestistbuddy]

Thanks for your reply stiles. I only play with the colonial charter mod. I haven't added the mega mod or any other. So haven't seen a creamery. There are so many buildings and some seem to do the same thing. I added the Old Dairy so I can make the butter etc, but not sure what the Dairy Parlour or the milking barn does. I wanted to produce milk and found the animal pens do that. So confused to the purpose of or need for the milking barn and Dairy parlour? Sorry to be such a dough head about this, I wish there was more detailed information on these buildings. I certainly appreciate any information you can give me.