Horses are hard-wired to eat and are referred to as "trickle grazers". Free-ranging horses will graze or forage for around 10-15 hours per day (some up to 18 hours) with foraging behaviour spread over 10-15 individual feed bouts.
Manuka Lucerne haylage is a type of conserved forage. Instead of leaving the harvest to dry before baling, as would be done for hay
Traditionally hay has been the stable alternative to pasture and when more digestible energy is required to meet the increasing demands of performance horses the amount of hay decreases and the quantity of grain or concentrate increases.