Horses - Diet and Nutrition/Yeast for horses


At the Grey Bruce Horse Day you had talked about a certain yeast for horses, and I was wondering what it was for sure.  I have a couple of older horses that I am having trouble keeping weight on.  They  used to be butterballs.  Thanks for your help

Hi Sharon,

Thank you for your question.  I don't have a personal preference about yeast sources themselves, and find that live yeast and yeast culture work equally as effectively provided you feed the adequate amount (which would be listed on the label).  There are so many yeast products available to producers and Purina's Pur-A-Yeast is a perfect example.  You'll remember in my talk that not all prebiotic ingredients are created equally.  Yeast is great at improving feed efficiency (that's to say that it helps your horses convert forages to energy) but some weight loss issues could be more deeply rooted.  In these cases I suggest a prebiotic like Alltech's LifeForce Formula.  LifeForce provides a variety of yeast cell wall derivatives that perform different prebiotic functions...and yeast.  You may find it really helps your older horses.  LifeForce is available in Ontario from any of your Masterfeeds dealers. If they don't have it on the shelf they can order it from the main warehouse.  I hope you enjoyed the talk, best of luck with your aging companions.

Thanks, Corlena

Horses - Diet and Nutrition

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Corlena Patterson


I can help with any of your horse nutrition questions and concerns. I have been involved with horses for closing on 40 years, with a B.Sc in Animal Science and currently working on an M.Sc in Equine Science with the University of Edinburgh. I have owned my own feed store, consulted professionally as an equine nutritionist, and lectured in the fields of equine and dairy nutrition at the University level for 5 years. I have developed and currently market 'Ration-X', a ration formulation program for horses...designed for the everyday horse owner. I am happy to help in any way I can.


Experienced in developing and implementing feed programs for horses of all disciplines, creating custom horse supplements and managing inter-disciplinary equine facilities. Specialize in equine nutrition consulting.

The American Society of Equine Appraisers

'Stable Management' Handbook, Equine Canada.

M.Sc (Equine Science-current), B.Sc(Agr) Animal Science, Equine Sports Massage Therapy Certification, Farrier Certification, Equine Consultant Certification, Certified Equine Appraiser, Certified in Emergency Equine Rescue.

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