It is the primary source of nutrition for infant mammals (including humans who breastfeed) before they are able to digest other types of food.
Early-lactation milk contains colostrum, which carries the mother's antibodies to its young and can reduce the risk of many diseases.
It contains many other nutrients including protein and lactose.
As an agricultural product, milk is extracted from non-human mammals during or soon after pregnancy.
Dairy farms produced about 730 million tonnes of milk in 2011,1from 260 million dairy cows.India is the world's largest producer of milk,
and is the leading exporter of skimmed milk powder, yet it exports few other milk products.
The ever increasing rise in domestic demand for dairy products and a large demand-supply gap
could lead to India being a net importer of dairy products in the future.