Our TWH mares, who are 3 and 5, have been pastured at the neighbor's place since we got them in June. Currently they're getting all they hay they want (pasture is kinda bare now). They're also being fed sweet feed, which I do not want to continue once we bring them home, but I'm not sure what else they need in addition to their hay. They won't have access to pasture at our house.
They're ridden lightly and have a small paddock to share, so their calorie demands aren't that great. I'd like to give them a grain free diet, but without making it very complicated. Is good quality hay enough? How can I find out the nutritional value of the hay we'll be buying?
Currently they have a salt block, would a mineral block be better? Do they need both?
Any good references on this subject would be helpful too.