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.
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All the best,
Dr. Getty
Hello Ann,
Do you perhaps have my book, Feed Your Horse Like A Horse? I have an entire section in Chapter 17 -- Stress and Behavior on preparing your horse for travel.
It's more than I can go into for this response, but in general, you want to make sure he is getting all the nutrients he needs by feeding forage free-choice, along with a comprehensive vitamin/mineral supplement to fill in all the nutritional gaps that exist in hay. And two to three weeks before travel, start giving him extra vitamin E (1.5 to 3 IUs per pound of body weight), flaxseed meal, magnesium, B vitamins, and a probiotic.
If you would like to set up a pre-travel consultation, you may find that helpful.
All the best,
Dr. Getty 
Author of Feed Your Horse Like A Horse
Where are you from? Bayfield, CO