10/26/2025
13 Things That Terrify Your Equine Vet: Day 9
"When can I take the grazing muzzle off?"
This question always gives us pause because there are so many factors that influence what the correct answer is for each individual horse. Grass sugar, especially in Ohio, varies greatly for a multitude of factors, including stress of the pasture, the time of day, season, droughts, and hard frosts, just to name a few. Combine this with the fact that every horse's sensitivity to sugar is different and individual to that animal, and suddenly, what seems like a simple question on the surface starts to look like a calculus equation.
Thankfully, there are some new tests and tools we can use to try to answer this question for each individual horse. Insulin testing on the farm in addition to knowing the horse's history, diet, exercise, and environment can help us determine an answer for each individual patient. Testing hay for NSCs is also becoming more standard practice when managing our insulin-dysregulated friends.