Buckeye Nutrition

I purchased a 4 month old colt 2 years ago and I have struggle tremendously trying to get him up to par. He was already big boned but that was it. He went around looking like a pot belly pony with ribs. I have used Nutrena Safe Choice for years and my horses just stopped eating it, I do not know why. So I was searching for a different affordable feed. I found one that I really like and then also stumbled into Buckeye Nutrition so I put my little Duster on it by himself and all my others on the new feed that I can afford. Duster is starting to look like a real horse and he has only been on it for 2 weeks... a complete turnaround. So I will be going back for more. I rope and barrel race so nutrition is important to me. Thank you for this feed I was at a loss as to what to feed him next. The first photo if it loaded is before Buckeye and the second by himself is the 2 weeks after.