I think Nutrena has too many NSC's for my liking, but I'll look into it the next time. I don't think my mare has an issue with NSC's, but I want to stay safe and keep her as low as possible. Thanks for the info and taking the time to look it up!
franknbeans--Thanks! I'll be sure to start a thread for her when the big event seems imminent! We're pretty excited.