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The chicken (Gallus gallus domesticus) is a large and round short-winged bird, domesticated from the red junglefowl of Southeast Asia around 8,000 years ago. Most chickens are raised for food, providing meat and eggs; others are kept as pets [1] or for cockfighting.
Chickens were created when red junglefowl were domesticated for human use around 8,000 years ago [2] as subspecies Gallus gallus domesticus. They are now a major source of food for humans. However, undomesticated red junglefowl still represent an important source of meat and eggs in their endemic range.
Junglefowl are the only four living species of bird from the genus Gallus in the bird order Galliformes, and occur in parts of South and Southeast Asia.One of the species in this genus, the red junglefowl, is of historical importance as the direct ancestor of the domestic chicken, although the grey junglefowl, Sri Lankan junglefowl and green junglefowl are likely to have also been involved. [2]
Breed broiler is any chicken (Gallus gallus domesticus) that is bred and raised specifically for meat production. [1] Most commercial broilers reach slaughter weight between four [2] and six weeks of age, although slower growing breeds reach slaughter weight at approximately 14 weeks of age. Typical broilers have white feathers and yellowish skin.
Gallus gallus domesticus The Brahma is an American breed of chicken . It is believed that it was first bred in the United States from birds imported from the Chinese port of Shanghai , [ 4 ] : 78 and was the principal American meat breed from the 1850s until about 1930.
Gallus gallus domesticus The Robusta Maculata is a modern Italian dual-purpose breed of chicken . It originates in the city of Rovigo in the Veneto region of north-eastern Italy, where it was created between 1959 and 1965 by cross-breeding Buff Orpingtons with the commercial strain known in Italy as "White America".
Gallus gallus domesticus The Leghorn , [ a ] Italian : Livorno or Livornese , is a breed of chicken originating in Tuscany , in central Italy. Birds were first exported to North America in 1828 from the Tuscan port city of Livorno , [ 6 ] on the western coast of Italy.
Gallus gallus domesticus The Asil or Aseel is an Indian breed or group of breeds of game chicken . It is distributed in much of India, particularly in the states of Tamil Nadu , Andhra Pradesh , Chhattisgarh and Odisha ; [ 2 ] it has been exported to several other countries.