What are the best feeds to feed a mare that has a foal on her? The pair we have gotten a few months ago came to us well the mare came to us pretty skinny, i'd say she cold gain easy 150. And how much!!?? I was feeding an amount was told that was too much but everyone else says it is not. 3 qts in the morning and 3 in the evening. I work so a 3rd isn't possible. I'd love to though. I live way out so I don't have anyone that could just run out to the house and give an extra feeding. I give lots of hay. As much as they can eat. The hay here isn't very good. Just mixed coastal. We are lucky to have that right now. It was a really bad year around here!!