
The Holstein breed outnumbers all others used in the United States for the production of milk. Jersey and Guernsey breeds tolerate hot weather better than Holsteins, hence may be the predominant types used for the production of milk in hot weather areas. Some Ayrshire, and Brown Swiss or Shorthorn breeds are used in certain areas. Cow’s milk contains an average of 3.8 % fat, 3.3% protein, 4.8% lactose, 0.7% ash, and 87.4% water, Milk also contains vitamins and other nutrients in small amounts, making it the most complete of foods. The young of mammalians survive on it exclusively.

Fermented products such as cheeses were discovered by accident, but their history has also been documented for many centuries, as has the production of concentrated milks, butter, and even ice cream. The use of cheese and butter spread in Europe, parts of Asia and parts of Africa. Domestic cows were introduced to the colonies o f Europe during the Age of Exploration.

In 1856, Gail Borden patented a method for making condensed milk by heating it in a partial vacuum. In 1863, Louis Pasteur developed a method of heating to kill the microorganisms that cause wine to turn into vinegar. Later this method was adapted to milk processing and known as pasteurization process. Milk was first delivered in bottles on Jan 11, 1878 and known as a Milk day.
History of Milk