“Hello, can you tell me how many grams are in Horse Guard? It only gives mg. I want to make sure my horses are getting enough magnesium.”

Answer by Ph.D. Equine Nutritionist, Kelsey Johnson Nonella:

Your horse is getting 0.175 grams of magnesium is his 2 ounce dose of Horse Guard. The average horse needs to consume 10 grams of magnesium a day. Magnesium is a macro mineral and therefore is consumed in amounts higher than can be provided in a 2 ounce dose. Feeds that are high in magnesium are alfalfa and flaxseed. I would recommend getting your hay analyzed in order to determine your horse’s daily consumption of magnesium. Also, keep in mind that it is very important that your horse’s calcium consumption is about twice that of his magnesium consumption.

Horse Guard


About Dr. Kelsey J. Nonella Ph.D., P.A.S.

Kelsey J. Nonella, Ph.D. is an equine nutritionist who was riding horses before she could walk. Her love for horses drives her to help educate people on what their horses’ needs in order to have happy, healthy horses. Kelsey went to Cal Poly receiving a Bachelor’s of Science in Animal Science and then onto West Texas A&M, where she got her Masters and eventually her Doctorates in Equine Science. At A&M, Dr. Nonella did extensive research on Selenium within horses. Click here to view her research. Kelsey’s colleagues have mentioned her as one of the United States equine Selenium experts.
View all posts by Dr. Kelsey J. Nonella Ph.D., P.A.S.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.