Ethical compliance
All animal experiments were conducted in compliance with protocols approved by the Sichuan provincial Laboratory Animal Management Committee [Permit Number SYXK (Sichuan) 2019-187], and the Ethics and Animal Welfare Committee (EAWC) of the Sichuan Agricultural University. Humane endpoints were strictly adhered to over the entire experimental period. Birds that were unable or unwilling to eat and/or drink during the study period were immediately euthanized. All birds were euthanized via cervical dislocation by a trained technician, as approved by the EAWC.