“…Over an extended period of domestication, it has developed stable genetic traits and unique flavor. These traits encompass notable black features in the skin, bones, meat, beak, legs, cockscomb, and tongue ( Deng et al, 2021 ; Deng et al, 2022 ). However, a noteworthy phenomenon was observed during the slaughter process, revealing significant variations in the blackness of breast muscles ( BBM ) among Xuefeng black-bone chickens.…”