I've had my TB for 2 years. He's your typical hard keeper. I've posted on here several times asking for suggestions and some of you have strongly recommended free choice hay and little to no grain. I previously didn't have much choice on how much hay was fed, so I was trying to supplement the forage portion of his diet with beet pulp, rice bran, hay cubes, fat supplements, flax, oil, you name it. Despite stuffing his face with pounds and pounds of that stuff, he's still ribby.
Sooooo, forward shift to today. My BO and I are trying an experiement. We got him a big freshly cut round bale yesterday. He's been standing next to it eating all day like a kid left behind in a candy store. I'm really hoping that you free choice folks are right and he starts packing on weight. I took a pic today and will post our progress to see once and for all if this is really the answer for hard keepers.