本试验旨在研究饲粮硒和维生素E添加水平对樱桃谷种鸭产蛋性能和蛋品质的影响。选取健康的50周龄樱桃谷种鸭6 480只，随机分为6个组，每组4个重复，每个重复270只（其中母鸭220只，公鸭50只）。采用2×3两因子试验设计配制6种试验饲粮，饲粮中硒的添加水平分别为0.125、0.250 mg/kg，维生素E的添加水平分别为50、100、200 mg/kg。试验期为17周（50~66周龄）。结果表明：1）饲粮硒和维生素E添加水平对樱桃谷种鸭产蛋率和受精率均有显著影响（P<0.05），而对合格蛋率、受精率、受精蛋孵化率、健雏率和蛋重均无显著影响（P>0.05）。相比低硒（0.125 mg/kg）组，高硒（0.250 mg/kg）组的产蛋率和受精率显著提高（P<0.05）；100 mg/kg维生素E组的产蛋率和受精率显著高于50 mg/kg维生素E组（P<0.05），与200 mg/kg维生素E组差异不显著（P>0.05）。饲粮硒和维生素E添加水平的交互作用对樱桃谷种鸭产蛋性能的影响不显著（P>0.05）。2）饲粮硒添加水平对樱桃谷种鸭蛋壳厚度有显著影响（P<0.05），而对蛋比重、蛋壳重、蛋黄比率、蛋黄颜色、哈氏单位和蛋壳强度无显著影响（P>0.05）。饲粮维生素E添加水平对樱桃谷种鸭蛋壳厚度、蛋黄比率和蛋黄颜色有显著影响（P<0.05），而对蛋比重、蛋壳重、哈氏单位和蛋壳强度无显著影响（P>0.05）。饲粮硒和维生素E添加水平的交互作用对樱桃谷种鸭蛋壳重和蛋壳强度的影响显著（P<0.05）。其中，高硒（0.250 mg/kg）和高维生素E（200 mg/kg）组的蛋壳重和蛋壳强度最大。综上，本试验条件下，樱桃谷种鸭饲粮中添加0.250 mg/kg硒和200 mg/kg维生素E时可获得较佳的产蛋性能和蛋品质。

This experiment was conducted to study the effects of dietary selenium and vitamin E supplemental levels on laying performance and egg quality of Cherry Valley breeding ducks. A total of 6 480 healthy Cherry Valley breeding ducks aged 50 weeks were randomly divided into 6 groups with 4 replicates per group and 270 ducks per replicate (including 220 female ducks and 50 male ducks). Seven experimental diets were designed by using a 2×3 two-factor experimental design with 2 selenium supplemental levels (0.125 and 0.250 mg/kg) and 3 vitamin E supplemental levels (50, 100 and 200 mg/kg). The experiment lasted for 17 weeks (50 to 66 weeks of age). The results showed as follows: 1) both dietary selenium and vitamin E supplemental levels had significant effects on laying rate and fertilization rate (P<0.05), while had no significant effects on qualified egg rate, fertilization rate, fertilization egg hatching rate, healthy chicken rate and egg weight (P>0.05). Compared with low selenium (0.125 mg/kg) group, the laying rate and fertilization rate in high selenium (0.250 mg/kg) group were significantly increased (P<0.05). Ducks in 100 mg/kg vitamin E group had significantly higher laying rate and fertilization rate than those in 50 mg/kg vitamin E group (P<0.05), while which had no significant difference compared with ducks in 200 mg/kg vitamin E group (P>0.05). The interaction effect of selenium and vitamin E supplemental levels had no significant effect on laying performance (P>0.05). 2) Dietary selenium supplemental level had a significant effect on eggshell thickness (P<0.05), while had no significant effects on egg proportion, eggshell weight, yolk ratio, yolk color, Haugh unit and eggshell strength (P>0.05). Dietary vitamin E supplemental level had significant effects on eggshell thickness, yolk ratio and yolk color (P<0.05), while had no significant effects on egg proportion, eggshell weight, Haugh unit and eggshell strength (P>0.05). The interaction effect of selenium and vitamin E supplemental levels had significant effects on eggshell weight and eggshell strength (P<0.05). Among them, high selenium (0.250 mg/kg) and high vitamin E (200 mg/kg) group had the biggest eggshell weight and eggshell strength. In conclusion, in this experimental conditions, Cherry Valley breeding ducks have better laying performance and egg quality when dietary supplemented with 0.250 mg/kg selenium and 200 mg/kg vitamin E.