Meet the Authors

Performance Horse Nutrition

Performance Horse Nutrition (PHN) is an international equine nutrition consulting company. PHN consults and advises feed manufacturers, biotechnology companies, equine veterinarians, universities, horse trainers, private horse farms and elite equine athletes.

The goal of PHN is to bring the latest and most innovative equine nutrition knowledge to horse owners throughout the world. These advances in equine nutrition are made available in premium quality horse feeds manufactured in association with PHN.

Performance Horse Nutrition employs two Ph.D. equine nutritionists with experience in research, consulting and feed mill management. PHN boasts a significant bibliography including 2 published books on Equine Nutrition; other publications include numerous lay and scientific articles.

Some of PHN’s significant accolades to date including designing the unique diet for the 2011 World Cup Winner – the world’s richest Thoroughbred horse race as well as being named the Official Nutritionist for the Alltech FEI World Equestrian Games in 2010.

In 2015 being part of a team designing nutritional supplements supplied to the Triple Crown and Breeders Cup winner American Pharaoh. In Australia we have seen several clients horses entered into Australia’s most prestigious Thoroughbred horse race, the Melbourne Cup. It is a 3,200 meter race for three-year-olds and over. It is the richest “two-mile” handicap in the world, and one of the richest turf races. The winner of the 2015 Melbourne Cup and the 3rd place finisher were both being fed a PHN formulated racing feeds.

Performance Horse Nutrition prides itself on designing feeds suitable for regional markets. All of PHN’s feed manufacturing clients are actively growing.


Dr. Stephen Duren

Dr. Stephen Duren is a native of Soda Springs, Idaho. He completed his Bachelor of Science in Animal Sciences at the University of Idaho. Dr. Duren earned a Master of Science and Doctor of Philosophy in Equine Nutrition and Exercise Physiology from the University of Kentucky. Dr. Duren is the founder and president of Performance Horse Nutrition, LLC, and consults with feed manufacturers and horse owners throughout the world. He works extensively with Thoroughbred breeding farms and racehorses as well as performance horses in Australia, New Zealand, India, Japan, Singapore, China, Hong Kong, Canada and the United States. Dr. Duren is the author of “The 101 Most Frequently Asked Equine Nutrition Questions” and the co-author of the sold out book “The Concise Guide to Nutrition in the Horse.” He was the official nutritionist for Alltech during the 2010 Alltech FEI World Equestrian Games held in Lexington Kentucky. He is recognized as a preeminent expert on equine health and nutrition by feed manufacturers and horses owners across the globe. He was instrumental in the formulation of Green Feed, the first environmentally friendly equine feed in North America. Green Feed was introduced in 2009 to the West Coast market in the U.S. after being developed in partnership by Alltech and a California-based feed manufacturer.

Dr. Tania Cubitt

Dr. Tania Cubitt is a native of Queensland Australia. She received her Bachelor of Science from the University of Queensland in Animal Science. Dr. Cubitt received her Master of Science from Virginia Tech in Equine Nutrition and Growth, this work focused on environmental influences on hormonal and growth characteristics in Thoroughbred fillies. She received her Doctor of Philosophy in Equine Nutrition and Reproduction also from Virginia Tech, this work focused on nutritional effects on ovarian function. Dr. Cubitt currently holds a position as a nutrition consultant with Performance Horse Nutrition. Her interests are focused on developing feeding strategies for horses with special needs horses including metabolic syndrome, developmental orthopedic disease, gastric ulcers, and senior horses as well as feeding the broodmare. Dr. Cubitt consults with feed manufacturers and horse owners throughout the world. She works with horse owners in Australia, New Zealand, China, Japan, Canada and the United States.

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