The scariest part if not knowing what caused this episode. Baby Girl is a very fit horse. She's ridden a minimum of three times a week for about two hours a ride, trotting and cantering with minimal walking. She was brought up to this level slowly and has comfortably when handling this kind of riding for several months without the slightest issue. She is turned out 16 hours a day and is very active in the pasture.
She isn't on a high grain diet. She gets three pounds of grain a day split between two meals. Her pasture is also good quality.
The ride that caused her azoturia was something I do all the time. 30 minutes, trot/canter with walk in between. The terrain was easy. Nothing about that ride was hard. This horse regularly competes in CTRs where we go 35 miles one day and another 25 the next, trotting almost the entire time, climbing mountains, and doing other challenging things. Nothing happened then. Why did that 30 minute ride cause her to tie up?
The vet guessed it was a genetic thing just coming into the light, but admitted it's hard to know for sure. I'm extremely concerned, because I don't want this to happen ever again...