Table 1. Information regarding the silver pheasants and golden pheasants used in this study.

Group	Species	Living environment	Number	Diet
SCT	Silver pheasant	Tianjin Zoo	6	Feed pelleted feed and chopped vegetables once a day.
GCT	Golden pheasant	Tianjin Zoo	6	Feed pelleted feed and chopped vegetables once a day.
SCB	Silver pheasant	Beijing Wildlife Park	6	Feed pheasant feed, vegetables and fruits once a day.
GCB	Golden pheasant	Beijing Wildlife Park	6	Feed pheasant feed, vegetables and fruits once a day.