Here is a pic of a 5 year old from this morning. We drew semen in late January and he went downhill since then. He has lost almost all muscle mass and has a pot belly. He comes and eats with the other bucks in his pen which are all butterball fat. I have been feeding them a high fat treat 1-2 pounds per head a day or every other day and adding vitamin and mineral supplements in case it is a mineral deficiency. He was wormed with Ivomec plus when he was drawn and Valbazen about 2 weeks ago sprayed on feed. When he first started going down I darted him with Banamine and Draxxin and Exceed with no improvement. I also add plenty of probiotics to feed as well. My first thought was a twisted gut when he was drawn but he probably would have died by now. He doesn't seem in any pain. Any ideas????