ForageForage is plant material (mainly plant leaves and stems) ea... Moreis plant materialMaterial or Matter is anything which has mass and occupies s... More (mainly plant leaves and stems) eaten by grazinglivestock. Historically, the term forage has meant only plants eaten by the animals directly as pasture, crop residue, or immature cereal crops, but it is also used more loosely to include similar plants cut for fodder and carried to the animals, especially as hay or silage.