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
Greetings Rachel,
I understand the problem with having hay analyzed when you have a different supply every few weeks. So, this is not an option for you, as you mentioned. Soaking the hay, of course, is best under these circumstances. And, then you'll want to fill in the nutritional gaps with a basic, comprehensive vitamin/mineral supplement. And, a very important adddition to the diet would be magnesium, preferably a magnesium/chromium supplement where you can give your horse 5,000 mg of magnesium per 100 kg of body weight.
Thank you for writing!
All the best,
Dr. Getty 
Where are you from? Bayfield, CO