Dried grass used for animal feed. It is cut, left to dry in the field and then baled. It is fed to livestock through the winter when fresh grass not available. Nowadays rarely used except for horses as it's production is unreliable in the UK climate. See our stock and crops pages for more details.
Grass that is cut and allowed to dry naturally in fields before being baled. This is stored and fed to livestock over the winter. It is less used now due to the unreliablility of the weather and relatively low feed value.
Hay is dried grass or legumes cut and used for animal feed, particularly for grazing animals like cattle, horses, goats and sheep. It is fed when or where there is not enough fresh grass or when fresh grass by itself is too rich for easy digestion by the animal. Pigs may be fed hay, but they do not digest plant fiber very efficiently.