Bodywork 4 Horses

25 Important Salt Facts for Horses

1. Research in Alberta, Canada, has shown that the placement of mineral or salt blocks in pastures significantly affects horses’ consumption. Horses consume more when blocks are placed in areas where they naturally gather. Interestingly, placing them near the water source actually reduced salt intake to alarmingly low levels.

2. Sodium is an electrolyte that helps maintain normal fluid balance, hydration, and acid-base (pH) balance throughout the body.

3. Sodium, a key component of table salt (sodium chloride), is essential for proper muscle contraction, nerve function, and cellular communication.

4. Approximately 30% of the body’s sodium is stored in bone, while the remainder is found in body fluids such as blood, plasma, sweat, and within soft tissues.

5. Sodium is commonly deficient in working horses because substantial amounts are lost through sweat and urine.

6. Horses cannot store large reserves of sodium, making a consistent daily intake important—especially for horses in work or hot climates.

7. An increased desire to lick fences, wood, dirt, people, or equipment can sometimes indicate a salt deficiency, although other causes are also possible.

8. Providing salt encourages horses to drink more water while helping maintain proper hydration, electrolyte balance, muscle function, and nerve transmission.

9. Sodium also helps transport nutrients such as glucose and amino acids across the intestinal wall, supporting nutrient absorption.

10. Along with sodium, potassium, chloride, calcium, and magnesium are all essential electrolytes that work together to maintain normal body function.

11. Common sources of sodium include loose salt, salt blocks, commercial concentrates, and electrolyte supplements.

12. Loose salt is often consumed more consistently than hard salt blocks. Offering both allows horses to choose the form they prefer.

13. Plain white salt (sodium chloride) is generally just as effective as Himalayan, sea, or colored salts for meeting a horse’s sodium and chloride requirements.

14. Fresh pasture alone rarely supplies enough sodium to meet a horse’s daily needs, making supplemental salt important even for horses on pasture.

15. Most commercial feeds do not provide enough sodium for horses in moderate to heavy work without additional salt.

16. Signs of sodium deficiency may include poor performance, lethargy, reduced sweating, muscle weakness, nerve dysfunction, reduced appetite, dehydration, and decreased thirst.

17. Salt deficiency can reduce a horse’s desire to drink, increasing the risk of dehydration and impaction colic.

18. Horses lose large amounts of sodium and chloride in sweat. During prolonged work or hot, humid weather, these losses can become significant.

19. A horse working hard in hot weather may require two to four ounces—or even more—of salt daily, depending on workload and sweat losses.

20. Electrolyte supplements should always be accompanied by unlimited access to fresh, clean water.

21. Salt alone does not replace all electrolytes lost through sweating. Horses in heavy work may also need potassium, calcium, magnesium, and chloride replenishment.

22. Horses generally regulate their own salt intake well when free-choice salt and fresh water are consistently available.

23. Horses experiencing low salt levels, electrolyte depletion, prolonged heat exposure, dehydration, or other environmental stressors may be more likely to develop anhidrosis, reducing their ability to sweat and regulate body temperature effectively.

24. The average 1,100-pound horse typically requires about 0.75–1 ounce of salt per day, while working horses or those living in hot, humid climates often require substantially more.

25. Fun Fact: A horse’s tongue contains approximately 25,000 taste receptors, compared with about 8,000 in humans. Most of these receptors are located toward the back of the tongue and the roof of the mouth, helping explain why horses can happily lick pure salt and we can’t.

https://koperequine.com/21-interesting-facts-about-horse-sweat/

Recognizing Heat Stress and Other Essential Tips to Help Your Horse Handle the Heat

Heat stress can rapidly become a medical emergency. Horses generate tremendous amounts of heat during exercise, and high temperatures—especially when combined with humidity—can overwhelm their ability to cool themselves through sweating. Severe heat stress can lead to dehydration, electrolyte imbalances, muscle damage, colic, heat stroke, organ failure, and even death. Fortunately, many cases can be prevented with good management.

1. Know the Signs of Heat Stress

Early recognition is critical. Watch for:

* Excessive sweating or an absence of sweating
* Rapid or labored breathing
* An elevated heart rate that remains high after exercise
* Weakness or unsteadiness
* Depression or reduced awareness of surroundings
* Loss of appetite
* Dark or tacky gums
* A re**al temperature above normal that does not decrease with cooling (normal is approximately 99–101.5°F or 37.2–38.6°C)

If you suspect your horse is overheating, contact your veterinarian immediately while beginning aggressive cooling.

2. Cool the Horse Immediately

Current research supports using large amounts of cold water over the entire body as quickly as possible.

Continuously hose the horse with cold water, paying particular attention to the neck, shoulders, chest, back, and hindquarters. Continue cooling until your veterinarian advises otherwise or your horse’s temperature has returned to a safe range.

Using fans while hosing further improves cooling by increasing evaporation. The combination of cold water and airflow cools horses faster than either method alone.

Do not delay cooling while waiting for your veterinarian to arrive.

Myth Busting: Should You Scrape Water Off or Leave It On?

For many years, horse owners were taught to immediately scrape water off after hosing.

Current research shows that continuous application of cold water is the fastest way to reduce body temperature, even if some water remains on the horse.

Effective cooling depends primarily on:

* The temperature of the water
* The amount of water applied
* The surface area covered
* Air movement across the wet skin

If you are applying water continuously, stopping to scrape between applications usually slows the overall cooling process.

If only a limited amount of water is available, scraping before reapplying fresh water can be beneficial because it removes warmed water and allows cooler water to contact the skin.

In other words, when rapid cooling is needed, the priority is to get as much cold water over as much of the horse as possible, as quickly as possible.

3. Encourage Drinking

Provide unlimited access to fresh, clean water at all times.

Cool water is safe for hot horses and encourages drinking. As horses drink, the water replaces fluid losses while also helping absorb and dissipate heat from within the body. Water intake often doubles or even triples during periods of extreme heat, and many horses consume 20 gallons (75 L) or more each day, particularly when working.

Allowing a hot horse to drink cool, clean water is not only safe but encouraged. Restricting water after exercise can worsen dehydration and delay recovery. Most horses naturally regulate how much they drink, and immediate access to fresh water supports both hydration and cooling.

4. Replace Electrolytes

Sweating results in substantial losses of sodium, chloride, potassium, calcium, and magnesium.

A plain white salt block should always be available, but many working horses cannot replace their electrolyte losses from a salt block alone. During hot weather, prolonged exercise, or periods of heavy sweating, a balanced electrolyte supplement is often beneficial. Horses should always have free access to fresh water whenever electrolytes are provided.

5. Maximize Airflow

Good airflow is one of the simplest and most effective ways to help horses stay cool.

Keep barns, stalls, and trailers well ventilated so heat and moisture can escape. When used safely, fans increase air movement across the horse’s body, improving evaporative cooling and helping dissipate excess body heat. Fans are especially effective after hosing with cool water, as the combination cools the body more rapidly than either method alone.

Pastured horses should also have access to areas with good natural airflow whenever possible.

6. Provide Shade

Pastured horses should always have access to natural or artificial shade during hot weather.

Although shade alone will not prevent heat stress, it significantly reduces heat gain from direct sunlight. Remove unnecessary blankets or heavy fly sheets during hot weather whenever practical.

7. Adjust Exercise

Whenever possible, exercise during the coolest parts of the day, usually early morning or late evening.

Reduce workload during periods of high heat and humidity, allow more frequent rest breaks, and monitor recovery carefully. High humidity reduces the effectiveness of sweating, making overheating much more likely.

A horse’s heart rate, respiratory rate, and body temperature should steadily return toward normal during recovery. If they remain elevated despite cooling, contact your veterinarian.

8. Give Extra Attention to At-Risk Horses

Older horses, obese horses, and those with metabolic disease, respiratory disease, cardiovascular disease, or a previous history of heat illness often require additional monitoring during hot weather.

These horses may fatigue more quickly, tolerate heat less effectively, and recover more slowly after exercise.

9. Continue Monitoring After Exercise

A horse continues producing significant body heat even after exercise has ended.

Continue cooling while monitoring heart rate, respiratory rate, attitude, hydration, and body temperature until they have returned toward normal.

10. Be Mindful During Transport

Horse trailers can become significantly hotter than the outside air, particularly when parked or moving slowly.

Ensure excellent ventilation, avoid transporting during the hottest parts of the day whenever possible, and offer water during longer journeys.

https://koperequine.com/understanding-equine-cooling-mechanisms-how-horses-beat-the-heat/

There is a number you should know before you march into your summer lessons.

Take the temperature in Fahrenheit. Add the relative humidity percentage.
That's it.
That number tells you a lot about what HEALTHY fit horses can handle related to heat.

For example: later this week my forecast says:
101 degrees F with 37% humidity so that's 101+37 = 138
That means we are not working horses!

Since horses rely on sweat evaporation to cool their body, under 130 and horses can generally regulate body heat effectively.

Between 130 and 150, heat stress risk goes up. If you're working horses in this range, you should be monitoring closely and cooling down intentionally after every lesson.
Above 180, horses physically cannot cool themselves. Work at that point isn't just uncomfortable for them. It's dangerous.

These numbers aren't something I made up. They come from the American Association of Equine Practitioners and have been adopted by US Equestrian as their official heat guidance for competition. But we should be applying this idea to lesson too.

Plus from everything I have seen, a large population of lesson horses are older and tend not to be quite as fit. Those two factors alone are huge when considering the heat. Additionally, if you have horses that have metabolic conditions and/or take medications, those things can also impact how a horse regulates their body temperature.

I know canceling lessons is hard. There's the communication piece, the rescheduling aspect or the planning of unmounted activities. And it's ok to question "do I really need to?" piece. But its better to that have that conversation with your riders/families than one with the vet trying to manage a horse in distress.

What does your program use to make the call on hot days?
Do you have a set number, or is it more of a gut check?

Sources:
American Association of Equine Practitioners (AAEP) heat index guidelines, as adopted by US Equestrian
University of Georgia Equine Program, "Managing Horses in Hot Weather" (2025):

https://equusmagazine.com/horse-care/beat-the-heat?fbclid=IwZnRzaASpiORleHRuA2FlbQIxMQBzcnRjBmFwcF9pZAo2NjI4NTY4Mzc5AAEeiZyslnPw1XuiJma4NmyEwIP2AGtrHudAZgrjgprpPO0v6hofh7e3Y4mcTD8_aem_vGrduAJDdQXSkZ47UTFkGQ

Help your horse beat the heat Here are 3 simple ways to keep your horse comfortable on hot summer days. Horses are built to conserve heat and they aren’t particularly good at regulating their body temperatures, which means they can quickly go from “hot” to “overheated.” Here are some simple ways to keep him comfortable...

Meliorism comes from the Latin melior, meaning “better.” It is the belief that the world can be improved through thoughtful action, education, and the choices we make every day.

I like to think that massage therapy, fascial therapy, and education are my small contribution to that idea.

Every horse that moves more comfortably, every owner who learns to recognize subtle signs of discomfort, and every person who begins to see their horse through a lens of curiosity, empathy, and understanding creates a ripple effect.

Through hands-on therapy, I help horses find greater comfort, mobility, and freedom within their bodies.

Through education, articles, and awareness, I hope to help people better understand how movement, posture, fascia, compensation patterns, aging, training, recovery, and overall wellbeing are interconnected.

Knowledge changes observation.

Observation changes decisions.

Better decisions improve welfare.

And improved welfare improves lives.

I may not change the entire world, but I can help make the world a little better for the horses and people within it.

This is my version of meliorism in practice: using what I know, sharing what I can, and helping create a little more comfort, understanding, and compassion than existed before.

Perhaps you can do the same in your own corner of the world.

https://koperequine.com/connection-the-oldest-language-of-the-nervous-system/