Clair Thunes, PhD

Clair Thunes, PhD, is an independent equine nutrition consultant who owns Summit Equine Nutrition, based in Sacramento, California. She works with owners/trainers and veterinarians across the United States and globally to take the guesswork out of feeding horses. Born in England, she earned her undergraduate degree at Edinburgh University, in Scotland, and her master’s and doctorate in nutrition at the University of California, Davis. Growing up, she competed in a wide array of disciplines and was an active member of the United Kingdom Pony Club. Today, she serves as the regional supervisor for the Sierra Pacific region of the United States Pony Clubs. As a nutritionist she works with all horses, from WEG competitors to Miniature Donkeys and everything in between.

Articles by Clair Thunes

Don't Let Your Horse Hay Go Up In Flames

Learn how to avoid combustion and barn fire caused by your stored hay. Read More

Bugs in a Bag of Horse Feed

What should you do if you find unwelcome pests in your horse's grain? Our nutritionist weighs in. Read More

Late-Cut Hay Questions

The weather can halt early season hay production. Here's what to remember if you only have access to late-cut hay. Read More

Avoiding Dehydration in Sport Horses During Summer

Keeping competition horses well-hydrated isn't always easy. Our nutritionist offers tips to help prevent dehydration. Read More

A Look at Pony Club's Feeding Rules

Our nutrition expert, who's also a USPC regional supervisor, shares the basic nutrition rules every Pony Clubber learns. Read More

How to Get a Horse to Drink When Away From Home

Find out why some horses won't consume water away from home and learn how to keep him hydrated. Read More

Nutrition Tips for Traveling With Your Horse

Travel stress can lead to gastric ulcers and colic. Use these strategies to help keep your horse healthy away from home. Read More

Improving Dry Equine Skin and Coats With Nutrition

Do you have a horse with flaky skin and a dry mane and tail? The right feed might help. Read More

Anhidrosis in Horses

Our equine nutritionist and physiology expert offers advice on managing horses that have stopped sweating. Read More

Is There a 'Right Kind of Salt' for Horses?

An equine nutritionist addresses the different types of salt available and how to pick the right one. Read More

Algae in Horse Water Troughs: Is It Safe?

Our nutrition expert offers tips for keeping algal blooms to a minimum in your horse's water trough this summer. Read More

Feeding PPID Horses

Our nutrition expert explains how diet changes can help horses with pituitary pars intermedia dysfunction (PPID). Read More

Nutrition and the Equine Topline

Find out how proper nutrition, including high-quality protein, could help improve muscling over your horse's back. Read More

How to Introduce and Use a Grazing Muzzle for Horses

An equine nutritionist offers tips for reducing your horse's pasture intake with a grazing muzzle. Read More

Senior Equine Feeds and Fiber

Our equine nutritionist explains why senior feeds are high in fiber and why that's good for your older horses. Read More

Should I Feed My Horse Garlic to Repel Insects?

Our equine nutritionist takes a closer look at garlic's potential to fight off flies and biting insects. Read More

Understanding Calories and Energy for Horses

In most cases, energy requirement recommendations are an estimate of what a horse needs. Read More

More Work Might Mean Your Horse Needs More Calories

Have you increased your horse's workload this spring? Find out how to safely increase his energy intake to match. Read More

Getting Ready for Rolex: By the Numbers

How many trot sets and calories does a horse require to get Rolex-ready? Join "Forty" as he preps for the grueling test. Read More

Feeding Type-1 PSSM Horses

Balanced nutrition and exercise can help horses with type-1 PSSM lead active, healthy lives. Read More

How Long Can I Store Horse Feed?

Your feed store is having a big sale, but here are some tips before you stock up. Read More

How Do I Transition My Horse to Pasture?

Our equine nutritionist shares tips for keeping your horse healthy and your pastures in good shape this spring. Read More

Choosing Hay for a Yearling Horse

Our nutrition expert considers grain hays, grass hay, and alfalfa for feeding growing horses. Read More

What is a Nutraceutical?

Are you confused about nutraceuticals in your horse's diet? Learn more from our equine nutrition expert. Read More

DMG and Creatine in the Equine Diet

Do these supplement ingredients improve performance? Read More