Okay, so my TB has (had) thrush in his two back hooves....on the left side, it was a little less than half of his frog, and on the right it was a little less than a quarter. The farrier cut everything out and I put some thrush buster on there so I'm not worried about treating it, but I'm just wondering how long it would take something like that to pop up? Its been VERY rainy/wet here in our neck of the woods, but why would it only come up in his back feet and not his front? I pick them all every other day, since that's the only time I can get out to the barn, but when work allows I pick them out more often. Is it something that could pop up over the course of a few days, or would this take weeks to fester?
I'm trying to pin down if this is my error, if something funky is going on at the barn, or if it just happened to come about over the weekend.