It was then suggested that I invest in a bag of Purina Equine Senior Feed to give her occasionally. Alright, that I can do.
Here's the thing, she lives outside 24/7 and our board agreement does not include a daily feeding of grain. If she's going to get grain, I buy it, I feed it. I don't go out everyday. That's where I'm wondering if it's ok that she gets perhaps just under a pound of Senior Feed 2x a week. Won't that mess with her system? According to my friend, Equine Senior is so digestible, it shouldn't be a problem. It also has vitamins and minerals that free-choice won't give her, she says.
I know there are some really knowledgeable people on here who I'm sure can distinguish black from white for me.