What percentage of forage should a horse consume per day?

The general guideline for horses is to consume approximately 1.5-2% of their body weight in forage each day. This includes pasture, hay, or other forms of forage. 

For a 500kg horse, consuming 1.5-2% of their body weight in forage would amount to approximately 7.5-10kg of forage daily. This provides horses with the necessary fibres, nutrients, and energy they need to maintain their health and meet their dietary requirements. 

It's important to note that the specific amount of forage required may vary depending on factors such as the horse's age, activity level, metabolism, and overall health. Consulting with a veterinarian or equine nutritionist can provide more precise recommendations based on your horse's individual needs. 

Remember, forage is a crucial component of a horse's diet and should not be overlooked. It provides not only essential nutrients but also promotes digestive health, helps prevent issues like colic, and supports natural grazing behaviours.