Have you discussed it with your rep? We had a very long discussion with ours last Saturday. Lots of interesting facts. And yes we do feed it to a mare with alfalfa sensitivites. She does just fine on it.
The Nutrena nutritionist confirmed that it had afalfa, and the vet said it is a 100% no no - especially since Junior is still recovering from the toxicity of eating too much of it. Poor guy. The only commercial feeds we've found that don't have alfalfa in them are Purina Omolene 400 and Shawnee Mills Paddock.
Junior is doing much better and gaining weight - unfortunately he's decided that a growth spurt is the order of the day, so instead of filling out and looking nice, he's getting taller and still looks skinny - but is obviously much healthier. He still has a long way to go.
He's stuck with beet pulp, timothy pellets, Paddock and Omega Horse Shine. ETA: sorry - forgot the BOSS!
Thank heavens that Paddock is only $7/bag! Guess that's the benefits of having a local feed mill?