Does windsucking effect the performance of the horse.?

If your horse is "wind sucking", he/she is probably cribbing. Cribbing is when a horse bites down on something, (a trough, a bucket, wood), and sucks in wind, it releases endorphins in their brain. It is like taking speed, only with your horse. Cribbing serves as a high, and most likely comes about as a result of boredom.Cribbing can not be completely stopped in most cases, but can be minimized with a cribbing collar, you can probably get one of those at your local vet or tack shop. But, keep in mind that there is a HUGE difference between chewing and cribbing, when cribbing, you should hear him/her sucking in air and see his/her nick muscles tightening. To answer your question more directly, in most cases cribbing will not make a difference in your horse's performance, but should be stopped because it decreases sale value, and is bad for your horse. If your horse is in fact cribbing, ask yourself why he/she may be doing it? Boredom? Are you keeping him/her inside a stall most of the time or all the time? Is he/she not getting enough exercise?