My horse got a little ribby at the end of last winter. She tends towards hot and ulcers. Here's what's worked for her (other than hay):
TC Senior 1 1/2 qt am & pm and 1 qt for lunch
2 qts alflafa pellets, 2 cups canola oil, water - lunch
that's it. In the summer I take out the 1 qt of senior for lunch and decrease the oil a bit. On this diet horse looks great. I've fed the alfafa pellets wihtout adding anything when I've run out of oil and never had a problem. They don't make my horse hot at all, if anything they calm her down as I feed them right before she works which seems to make her belly happier.