Sorry for the long story but I feel I need to explain everything.
I got this horse back in October and he was fed free choice grass hay, and 2 cups beet pulp 2xday. He is a registered QH but definitely looks more Thoroughbred w/an Arabian head. He was in shape looking but his ribs showed when he moved. He's always had boney withers/back.
I moved him to a boarding stable that was NOT feeding him enough plus I switched him to Safechoice and he ended up losing weight from that. His ribs were now visable and developed an even more boney topline.
I moved him to a different stable after a couple months and they understood my concerns and we worked on putting on weight all winter. He was put on a cup of Veg. Oil and 4 scoops Purina Ultium with some beet pulp thrown in. He was also getting grass/alfalfa mix hay. It seemed he put a little bit of a fat layer over his ribs but you can still see them when he moves and obviously still feel them. He still has very boney withers and when I ride bareback, his spine is extremely uncomfortable. I only ride maybe twice a week just walk/trot.
He is now on pasture for a couple hours/day and gets 3rd cut hay at night along with the grain/veg oil mix. Some days I can feel his ribs very well and other days there is a good layer of fat over them. I can't tell if he's sucking it in or what. Some days he looks like a beef cow other days he looks like a lanky rescue horse!
He is in good weight/muscle everywhere but his topline/withers, and rib area. He has been vet checked, dewormed, etc. Is it possible some horses just do not gain weight in those areas? Or does he need to be worked more?
***I have no idea if this matters but his front end looks very good but his back end looks scrawny. And the other day when I was lunging him at a trot he tripped (like he always does) but he just kinda pulled his back end along for a couple strides (his back feet were LITERALLY dragging)...it seems he doesn't pay attention to his feet. Could it just be the muscling that he needs and not fat? I'm so frustrated with it!!!