Join Date: May 2009
Location: Mid Northern TN
My gelding stocks up in his hinds if he's stalled for too long. And how long is 'too long' varies. Sometimes, after heavy exercise, even overnight will cause it if I don't wrap his legs. Normally a day and a half or two days is 'too long.' It doesn't bother him, and it goes away with some light exercise and turnout, so I don't worry too much about it except to make sure he gets turned out for a good part of the day, which I believe horses need anyway.
I don't think my horse ever saw a stall until the past two years with me as he was a pasture/field/drylot horse until he was 5, so I don't know how that plays into anything other than not moving = stocking up. I have heard of a couple cases where adding a joint supplement actually fixed a horse's tendency to stock up, and if you suspect arthritis in one of them, it might be worth a try anyway. Otherwise, get them moving or just ignore it until the weather is better, the ground is softer and they're moving about more.