Long story short, my OTTB mare came off the track because she was having issues tying up when breezed or worked hard. I found this out after I had her. She was gorgous, muscly, and healthy when I brought her home last late September....then she started to crash....she had skin problems (scratches, rain rot, and ringworm) all over her. She started losing muscle. She was put on a high fat feed and did not gain a lot. I added Vitamin E and Selenium supplementation (plus Daily Omegas, a hoof supplement, fat cat, and probios) in early November. Nothing seemed to help. She continued losing muscle and gained a pound or two here and there. She does not look emaciated by any means, just has no muscle tone. Her back dropped, backwards neck, and lost all rear end muscle. I had the vet out again today to draw blood work (CBC and muscle enzymes, checked her retinas, (were fine) and sent off a vit E and Sel blood vial to Cornell University. CBC and enzymes will be back tomorrow morning...Vit E and Sel won't be back til next week. My question to all of you is...if you have had a horse prone to tying up, had PSSM, muscle wasting, or whatever...what brand of feed did you use? I know I need a high fat low carb/sugar feed....but it seems that everything high fat is beet pulp or molasses based. I would really love to hear your stories about horses you may have had with any type of muscle disease and if treatment was successful (and what treatment you used). Her back is very sore right now and she has general body soreness so I am unable to ride her. I'm waiting to hear the results of bloodwork before I change anything for sure, obviously, but I'd love to hear from all of you! Thanks!