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Horse Water Needs

Calculate your horse's daily water needs based on weight, activity level and temperature

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๐Ÿ‡ฉ๐Ÿ‡ฐ All calculations are based on Danish rules, rates, and currency (DKK). This calculator is translated for convenience but applies exclusively to Denmark.

Calculate your horse's water needs

Water is the most important nutrient for horses. An adult horse typically drinks 25-55 litres per day depending on size, activity and weather conditions. This calculator estimates daily water needs based on three key factors.

Base water needs

The basic rule is about 5 litres of water per 100 kg body weight daily. A 500 kg horse thus has a base need of about 25 litres at rest under normal temperature conditions. This covers basic body functions, digestion and temperature regulation.

Impact of activity

Physical activity significantly increases water needs. Light work like calm riding increases needs by about 50%, while hard work like intensive training or competition can double water needs. During heavy exercise a horse can lose 10-15 litres of sweat per hour.

Temperature effects

Cold weather reduces water needs by about 20% as the horse sweats less. Hot weather increases needs by up to 50% as the horse sweats more to cool down. In extreme heat, needs may rise even further.

Signs of dehydration

Skin pinch test (pinch the skin on the neck โ€“ it should flatten within 2 seconds), dark urine, dry mucous membranes and reduced appetite are signs of dehydration. Always ensure free access to clean, fresh water. In winter, water should not be too cold as this can reduce intake.

Frequently Asked Questions

How much water does a horse drink per day?

An average 500 kg horse typically drinks 25-35 litres of water per day at rest under normal temperature conditions. During hard work in hot weather consumption can rise to 50-75 litres. Pregnant and lactating mares also have increased water needs, typically 30-50% more than normal.

Can a horse drink too much water?

Under normal circumstances a healthy horse regulates its own water intake. However, an overheated horse should not drink large amounts of cold water at once as this can cause colic. Let the horse drink in small portions. Excessive water intake can also be a sign of disease such as Cushing's syndrome or diabetes.

What happens if the horse doesn't drink enough?

Dehydration can quickly become life-threatening for horses. At just 5% dehydration, reduced performance and appetite are seen. At 8-10%, serious complications like colic, kidney failure and shock can occur. Horses can survive without food for days but only 3-4 days without water. Contact the vet immediately if serious dehydration is suspected.

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