I just got a new horse yesterday, the old owner had been feeding him Poulin Equi-Pro Performax 12:12 sweet feed. What I have read about it it says that it is for high performance horses. Rebel, my 8.5 year old registered paint is not a high performance horse. He used to barrel race over a year ago, but doesn't and won't be with me anymore. He has allergies and heaves to hay which are mild. I was wondering if anyone could help me to figure out what I should switch him to. He is also a little skinnier than I would like, he hasn't been in a grass paddock for over a year, but is going to be on and of now until he is used to it so I know that that will help with his weight. Any suggestions would be greatly appreciated?