hard feed Allen and page ride and relax it's molasses and barley free as well . For and alafalfa and molasses free chaff graze on or ready grass are excellent.
Dodson & Horrell hi fibre pony nuts (may be called pasture nuts now as they've had a change around, but they are the ones in a blue and white bag) are Alfalfa free and also low in sugar etc. Ready grass is good, and also Allen & Paige Fast fibre is great. I feed these to a pony with diagnosed alfalfa allergy who is a good doer. Hope this helps.
I have just started feeding Ride and Relax due to my mare sudden intolerance to alfalfa. So far I love it, her skin has calmed right down and itchiness gone completely. I'm currently feeding it with ready grass and speedie beet.