Milk: Meaning, Physical and Physico-Chemical Properties, Constituents, Production, and Trade
Milk is the secreted fluid of the mammary glands of female mammals. It has almost all of the nutrients needed to keep life going. Goat, sheep, and cow milk have been utilized as food by humans since the beginning of time. The word “milk” is now used interchangeably with cow’s milk. When provided commercially, the milk of other animals is identified, such as goat or sheep milk. Mammals’ mammary glands generate the white liquid meal known as milk. For young mammals, including breastfed human newborns, it serves as their main source of nutrition until they can process solid food. In addition to lactose and saturated fat, milk also includes calcium and protein. Milk immunity is a result of immunological factors and immune-modulating substances in milk.