My friends 6 year old mare chocked maybe a month ago. In the evening my friend called and said that her mare stopped eating and is coughing, what to do? like big, deep, cleaning cough. I went there (live close by) and saw the mare who was a bit upset about something. When I touched her throat, she started coughing. She didn't want water, but was breathing fine. Logic hit in, I checked if she can breathe faster - asked her to trot a little, then massaged her neck again - again some cough. A while later she returned to eating, as we let her be. She chocked on eating a beat root - ones they grow for animals to eat - not cut up, she was biting chunks herself.
The vet came the next day, because she was coughing bad in the morning again. Tubed her - food pipe clean. She said she cannot check the air pipe, but she is breathing fine.
They started some anti cough meds - something helped for a while, started again. Then different meds - didn't help.
Mycotoxin catcher worked while it was given, but at some point she still coughed. So that is not it either.
Owner is now looking for money, and better weather, to call the vet out to check her teeth (6, almost 7 yr old mare). Keeps good weight, no real suspicion on teeth just this choke and cough.
If the teeth don't show the problem, then a bronchoscopy will be in order.. but going by cheapest options first..
Also, there is suspicion that she has 'roaring'? As in the flap closes the airways and she becomes distressed. Which could be, as she sometimes starts having gurgling breathing, cough, and heavy breathing even though she hasn't been worked much.. on other days she is fine. She is our dilemma.
I am glad to hear your horse is fine now, soaked feed should prevent it.. and slowing eating process down. Hope it doesn't happen again :) best wishes :)