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.
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All the best,
Dr. Getty
Hi Judy,
Teff hay is poor in quality -- low in protein, and very high in starch since it is a grain hay. I would not feed it to a growing horse since the high starch will increase osteopathic disorders, and the low protein will stunt growth.
I strongly advise having it tested before feeding.
I'm not sure what you mean by "scored."
Dr. Getty 
Where are you from? Bayfield, CO
Hi Judy,
Yes, those are excellent numbers regarding starch and sugar.
What is the lysine level?
Dr. Getty
Where are you from? Bayfield, CO
Hi Judy,
Well, well, this hay is better than I thought! .45% of Lysine is fine for many horses. Let's say that you're feeding 20 lbs of this hay. That translates into 41 grams of lysine (20 lbs X 454 g/lb X .0045). This is good for an adult horse with moderate exercise. For a growing horse, however, it's a bit low, so extra supplementation would be necessary to bring the lysine level up to at least 44 grams per day.
Take a look at the RFV -- Relative Feed Value. It should be at least 100.
All the best,
Dr. Getty
Where are you from? Bayfield, CO