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The black and white font represents the five provinces in which all populations in this study are distributed. The red font represents the sampling location of the experimental material. Shigatse, Lhoka, Lhasa, Garze, Aba, Diqing, and Yushu are the main areas where Tibetan chickens are distributed. Emei, Miyi, Shimian, Wanyuan, Pengxian, Muchuan, and Wenchang are the main areas where Lowland chickens are distributed.
