We bought some prairie hay that was supposed to be good for horses. For most of our horses it was just fine, but it turned out to have alfalfa in it, and it was NOT good for Junior. He started dropping weight, and following the vet's instructions, we made double sure that he got no feed at all that had alfalfa in it to give his system time to recover.
We went out this morning to find him laying down, unable to get up. He was perfectly happy to eat his breakfast and hay while laying there. Vet (new vet) advised to add corn syrup to his feed to see if the extra burst of quick energy would encourage him to get up. It was no go. He happily ate and drank, but absolutely could NOT get up. He would try and try and try until he exhausted himself...but he could not get up - he could move his rear legs, but not well enough to stand up.
Vet finally made it out this evening. Gave him a shot to help give him some energy. We tried for an hour to get Junior on his feet, but he just couldn't do it.
He was just skin and bones, even though he always had a hearty appetite. Vet asked if there was any Impressive in his bloodlines, and my heart sank. There is no Impressive in his sire's bloodlines, but we knew nothing about his dam's, as she was a grade quarter horse. However, she passed away after also struggling with weight loss, and eventually she started having seizures and died. She was under a vet's care, but he never mentioned that ugly word...HYPP.
Son in law made the decision to have his little buddy PTS. Vet had a really hard time putting Junior down - he just did not want to give up. He had to give him an extra dose of the euthanizing drugs to "do the deed."
Well, little guy. At least we have some answers, now. It's too late for you and your mama...but now we know. We did all we could, but neither one of you ever really stood a chance...