Ask the Nutritionist: Dr. Getty's Forum for Equine Nutrition
Welcome to my forum.
Here you will find more than 6 years of questions and my answers. It is searchable and offers a great deal of information.
Currently, I am discontinuing new questions. This may change in the future, but in the meantime, please know that It has been a true pleasure serving you.
Take a look at my Nutrition Library and Tips of the Month for a variety of answers on selected topics. Be sure to sign up for my monthly e-newsletter, Forage for Thought.
I also have a growing number of recordings on "Teleseminars on Nutrition Topics that Concern You" as well as the new, Spotlight on Equine Nutrition Series -- printed versions of favorite teleseminars.
And finally, look for my articles in a variety of local publications and online newsletters, as well as the Horse Journal, where I am the Contributing Nutrition Editor.
All the best,
Dr. Getty
Hi Kelly,
So sorry for the delay in responding. I hope you were able to make the move to the new barn, since it sounds like a much better place for your mare.
Propionic acid is a short chain fatty acid that is naturally produced by the bacterial flora living in your horse's hind gut. These bacteria ferment hay into volatile fatty acids, which are acetic, butyric, and propionic acids, which are then metabolized by the cells for energy and heat.
Using at as a preservative is common and has been safely used for years. It has been shown to inhibit bacterial and mold growth in hay. And, there is no problem in feeding this hay.
So, move your mare with peace of mind that she is in a place that is better managed and healthier for her in many ways.
All the best,
Dr. Getty 
Where are you from? Bayfield, Colorado
Hi Kelly,
I think you made the best decision! 
Dr. Getty
Where are you from? Bayfield, Colorado