Wild junglefowl were initially taken into captivity for cockfighting or food.時間が経つにつれて、それらは肉と卵の生産を増やすために選択的に飼育され、今日の国内の鶏の明確な特徴をもたらしました。
遺伝的分析により、タイとインドの鳥が現代の鶏肉の祖先に貢献している複数の独立した家畜化イベントが明らかになりました。 This supports the theory of chickens being domesticated in different regions of Asia.
Excavations in China have uncovered chicken bones dating back to 6000 BC, indicating an early presence of domesticated chickens in the region.
The spread of chickens to other parts of the world occurred through human trade and migrations. Chickens were brought to Europe by the Romans, and to the Americas by Spanish explorers in the 15th century.
