Abstract This study was conducted to determine the effects of different tea polyphenol (TP) products on egg production performance, egg quality and antioxidative status of laying hens. A total of 840 Lohmann pink shell laying hens (36-week-old) were randomly divided into 7 treatments for a 12-week feeding trial. The control group was fed a basal diet (no exogenous TP addition), and the experimental groups were fed the basal diet supplemented with approximately 1000 mg/kg of 6 types of tea polyphenols. The TP contents in 6 experimental diets were 1086.1, 944.2, 1111.4, 1037.9, 1074.1, and 1081.7 mg/kg and the caffeine concentrations were 4.4, 17.2, 30.9, 37.5, 73.8, and 128.5 mg/kg, respectively. In terms of performance, TP (except 1086.1 and 1074.1 mg/kg) reduced (P

中文翻译：

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不同茶多酚制品对蛋鸡产蛋性能、蛋品质及抗氧化状态的影响

摘要 本研究旨在确定不同茶多酚（TP）产品对蛋鸡产蛋性能、蛋品质和抗氧化状态的影响。总共 840 只 Lohmann 粉红壳蛋鸡（36 周龄）被随机分成 7 个处理组进行 12 周的饲养试验。对照组饲喂基础日粮（不添加外源性TP），实验组饲喂添加约1000 mg/kg 6种茶多酚的基础日粮。6个实验日粮的TP含量分别为1086.1、944.2、1111.4、1037.9、1074.1和1081.7 mg/kg，咖啡因浓度分别为4.4、17.2、30.9、37.5、712.5和73.8.5 mg/kg。在性能方面，TP（1086.1和1074.1 mg/kg除外）降低（P