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Is your horse getting sufficient vitamins and minerals?

If you're not feeding according to label instructions, your horse might be missing out.

By Dr. Juliet Getty | 1-Nov-12

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Grazing Horses “For an adult horse with moderate activity, feed .75 to 1.0 lbs per 100 lbs of body weight.” These are the feeding instructions for a popular commercially fortified feed. If your horse weighs 1100 lbs (500 kg), you’ll need to feed 8.25 to 11 lbs of feed per day. For enough calories? Enough protein? Enough vitamins and minerals? Yes, to all of the above and more. That’s a lot of feed! That could amount to three to five two-quart scoops (depending on the weight of the feed) per day. And you’ll need to divide it into multiple feedings since meal size should never exceed 4 lbs (your horse’s stomach is small compared to the rest of his digestive tract).

Chances are excellent that you don’t feed anything close to the suggested amount. Does it matter? Yes. When you buy a fortified feed, most of what you pay for are the fortifications. You pay for the vitamins, the minerals, and any special ingredients such as flaxseed and soybean meals to provide omega 3 fatty acids and protein. The only way your horse will benefit from these nutrients is to feed according to directions. Modify them and you’ll need to “supplement the supplement.” For example, this feed provides 100 IUs of vitamin E per lb. If you fed half of the recommended amount, say 5 lbs, your horse would only receive 500 IUs per day. That’s the bare minimum, according to the National Research Council, for a 500 kg (1100 lb) horse. Most equine nutritionists agree, however, that this horse at maintenance would do better at amounts closer to 1,000 IUs per day. Furthermore, as activity increases, so does the vitamin E requirement. Therefore, supplementation would be appropriate.

Other nutrients provided to offer enough fat and protein may need to be supplemented when less than recommended amounts are fed; these might include omega 3 fatty acids, vitamins A and D, minerals such as copper and zinc, and a host of feedstuffs. As you can imagine, it becomes very tricky to figure out just how much to supplement. You could simply give half the supplement dosage if you are feeding half the fortified feed dosage. But to do this accurately, you should figure out how much your horse would have gotten if fed the recommended amounts, and then calculate how much supplement to feed to make up the difference. If you’re not comfortable with crunching numbers, your best source of information would be a qualified equine nutritionist.

Bottom line to “supplement the supplement”: Pay attention to labels, weigh your feed using a scale, not a scoop, and keep your calculator handy.

Further Reading
Vitamins for Horses

Dr. Juliet Getty is an internationally respected equine nutritionist available for private consultations and speaking engagements. At www.gettyequinenutrition.com, sign up for her informative—and free—monthly newsletter, Forage for Thought, read articles, join her nutrition forum, enroll in upcoming teleseminars, buy gift certificates, and purchase previously recorded events.

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Reader Comments

p    p, PW

11/1/2012 11:59:33 PM

p

PKL    somewhere, WY

11/1/2012 8:46:12 PM

I like the line, “supplement the supplement.”

kygal    rural, KY

11/1/2012 5:49:45 PM

interesting

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