07/06/2026
🌾 The Science of Soaking Hay 🌾
Ever wondered why we soak hay?
The main reason is to reduce the sugar content and digestible energy, allowing horses to enjoy their forage with fewer calories and a lower sugar intake. This is particularly important for horses that need careful weight or metabolic management.
✅ What soaking does:
Leaches out water-soluble sugars, including sucrose, fructose, fructans, and glucose.
Reduces digestible energy (calories).
Does not significantly change the protein content of the hay.
💧 How does it work?
Soaking softens the plant cell walls, allowing sugars to escape into the water. The more effectively the cell walls are softened, the more sugars can be removed.
🌡️ What's the best way to soak hay?
Research shows that soaking hay for just 1 hour at 16°C can remove more sugars than soaking in cold tap water for 16 hours.
Why? Because 16°C is the ideal temperature for softening plant cell walls, helping sugars leach out more efficiently.
❄️ Using cold water?
Soak for a minimum of 6 hours to begin effectively reducing sugar levels.
Avoid soaking for more than 12 hours, as bacterial growth in the water can increase.
🔄 Top tip: Stir the hay once or twice during soaking to encourage even more sugar removal.
⚖️ Remember...
While soaking reduces sugars, it can also wash away some valuable nutrients. Feeding a suitable balancer alongside soaked hay is important.
📏 Did you know?
Effective soaking can result in up to 20% dry matter loss. This means you can increase the weight of soaked hay fed by around 20%.
For example:
➡️ 10kg of dry hay = approximately 12kg of soaked hay
Small management changes can make a big difference to your horse's health and wellbeing. 🐴💚