This experiment was conducted to investigate the effects of Qizao extract on the laying performance,egg quality,reproductive hormones and follicle development of Yugan black bone chickens.A total of 120 Yugan black-bone chickens with good body condition at 240 days of age were randomly divided into 4 groups,with 6 replicates in each group and 5 chickens in each replicate.The control group was fed a basal diet.The experimental group added 100,200,400 mg/kg of Qizao extract.The adaptation period lasted for 56 days.The results showed that:(1)The Q...
