Azadirachta indica, commonly known as neem, nimtree or Indian lilac, is a tree in the mahogany family Meliaceae. It is one of two species in the genus Azadirachta, and is native to the Indian subcontinent, i.e. India, Nepal, Pakistan, Bangladesh, Sri Lanka, and Maldives. It is typically grown in tropical and semi-tropical regions. Neem trees also grow in islands located in the southern part of Iran. Its fruits and seeds are the source of neem oil.
Neem is a large and evergreen tree with edible fruits and aromatic leaves found throughout southern Asia. A mature tree can produce 350 kg of leaves a year, which may be used for feeding cattle during famines.
The neem leaves are not relished by the animals. Buffaloes consume about four to six kilogram. The nutritive value is 6.19% DCP and 50% TDN. After the oil has been pressed from the seeds, the cake is used as fertilizer, but it can also be used as feed. Up to 10% neem cake may be included in concentrates
for cattle and up to 5% for poultry. The oilcake has a very bitter taste. Leaves and cakes are used as anthelmintic for goats and is said to give healthy looking animals when fed.
The terpenoids azadirachtin and limonin impart a bitter taste and the leaves of A. indica are therefore not relished by cattle.