Animal husbandry in the British Agricultural Revolution of the 18th century, when livestock breeds like the Dishley Longhorn cattle and Lincoln Longwool sheep were rapidly improved by agriculturalists such as Robert Bakewell to yield more meat, milk, and wool. A wide range of other species such as horse, water buffalo, llama, rabbit and guinea pig are used as livestock in some parts of the world. Insect farming, as well as aquaculture of fish, molluscs, and crustaceans, is widespread. Modern animal husbandry relies on production systems adapted to the type of land available. Subsistence farming is being superseded by intensive animal farming in
Chicken breeds recognized by the American Poultry Association with both a rose comb and featherless legs: The breeds of this class have feathering on their legs and feet: This class includes all of the breeds that do not fall into any of the other classes: Chicken breeds recognized by the American Poultry Association All chicken breeds recognized by the American Poultry Association are categorized into classes. Standard-sized breeds are grouped by type or by place of origin; bantam breeds are classified according to type or physical characteristics. The large breeds are divided into six classes – American, Asiatic, Continental, English, Mediterranean, and All Other Standard Breeds – largely