Lysine in Trifecta


“I have a WA Region 9yr Old Morgan Trail Horse – easy keeper & healthy!

1) My WA horse is on local hay, oats, black oil sunflower seeds & trifecta. I am reading a lot about Lysine – and it seems our horses need this but it is not in Trifecta. Why not?

2) My horse has been on this diet for over a year and his hoofs and coat/main look great but he is always tender footed on the trail.  Should I add anything in to help out?

PS Love your product as we have dapples all year round!”

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

Thank you for the questions. It sounds like you are taking great care of your horse.

Lysine is the first-limiting essential amino acid for growing horses. In a typical horse’s diet, lysine comes from their 60-70% from forage and 30-40% from concentrates. So, in young horses it is important to high quality, high protein feeds which are high in lysine, such as alfalfa or soybean meal. However, it is important to note that unless the mature horse is on low-quality grass hay they will get plenty of lysine from forage and concentrates. Also in your case, feeding the BOSS(which are high in amino acids, although not as high in lysine as soybean meal) should ensure that your horse is not deficient in lysine.

As far as your horse’s hooves are concerned, I’m glad to hear that he is looking great. Unfortunately, some horses are more tendered footed than others. Nutritionally, it sounds like you are doing an amazing job with your horse. I would consider some kind of booties for him when you take him out, so his sole can have some added protection.

Thank you for taking such great care of your horse. Let me know if I can answer any more questions.

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Your email address will not be published.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.