I found this blog post randomly (Thank you Facebook for helping me waste time instead of doing what I was supposed to be doing 5 minutes ago).
I thought it was interesting, and telling.
The author is a milk farmer in the mid-west. She farms conventionally, milks fora co-op, and her milk is sold to major manufacturers through the co-op. She found her way to a product by one of her buyers that contains her milk and the milk of her fellow farmers. What she found on the bottle for claims about her milk were alarming for her, and unfortunately common for the rest of us. You can read the blog post here.
You can do everything right, but if your product goes to a corporation with a marketing department, all bets are off. If you are looking for something healthy in the grocery store, it ALL came through a marketing department.