You are right, he definitely needs to gain weight(good weight) and muscle!! His butt is more flat than round so that needs some work. He looks like he might be a little cowhocked in the back, but that could just be the way he is standing. I can't tell much on the front legs. Try to get a picture of him standing in front of you with the full frong leg picture instead of just the upper portion.
Unfortunately, with all the angles these photos were taken at, it makes critique almost impossible. You see how in the first one he looks dramatically downhill, but in the second picture not so much? Like I said, pretty impossible to comment on :( Get some pictures of him standing square on level ground (not sand), both sides, front and back views. He's a cutie though!
Also one where he is holding his head at least at wither height and is not turning his head. And never mind the straight-on front and back shots, just a good side shot is enough, but make sure the ground level is even. Like the second picture in this set, but more so. Stand him on a hard, flat surface if possible.
Ok hopefully these will do I couldn't really find flat ground as the padock is all dirt and I couldn't get him to stand square for the life of me :roll:
And again I know he is skinny and lack of muscle but he has 24/7 acsess to hay and I am trying on building up his muscle with mainly trot work trot poles and hills whenever I see them if you have any other suggestions I am happy to learn :)
Hey there, just thought I would let you know that feeding him hay and doing trot work is not going to put weight on him.
I know that you are aware of how skinny he is but he needs a comprehensive nutrition plan above and beyond hay, I can see a lot of ribcage in the photo's. I would suggest that he needs a rigorous worming regimen for the next six months along with a lot of extra feed, twice daily I would suggest to allow his digestive system to adjust to the new diet.
Protein builds muscle, not fibre. Unfortunately it is a catch-22 situation with horses (especially TB's) as more protein means more energy so you may also notice changes in behaviour. Just wanted to mention this in case you are still wondering why he is skinny in 3 months time. Seems like you really love him and no wonder, he looks like a sweetheart!