本试验旨在探讨青贮玉米籽实对蛋鸡生产性能、蛋品质和肠道内环境的影响。试验选用55周龄海兰褐蛋鸡200只,随机分成4组,每组5个重复,每个重复10只鸡。4组蛋鸡分别饲喂含0(对照组)、1%、2%和4%青贮玉米籽实的饲粮,试验期为7周。结果表明:与对照组相比,2%和4%青贮玉米籽实组产蛋率、平均日产蛋量、蛋壳颜色、哈夫单位均显著提高(P<0.05),料蛋比显著降低(P<0.05),盲肠和空肠中大肠杆菌数量显著降低(P<0.05)、乳酸杆菌数量显著提高(P<0.05);1%青贮玉米籽实组平均日产蛋量、哈夫单位、空肠与盲肠中乳酸杆菌数量显著提高(P<0.05),空肠中大肠杆菌数量显著降低(P<0.05);4%玉米籽实组空肠和盲肠pH显著降低(P<0.05)。以上结果提示,饲粮中添加适量青贮玉米籽实能够提高蛋鸡的生产性能和蛋品质,改善肠道内环境,综合各项指标可知,添加2%青贮玉米籽实效果最好。

This experiment was conducted to study the effects of silage corn seeds on performance, egg quality and intestinal environment in laying hens. Two hundred 55-week-old Hy-Line laying hens were randomly divided into 4 groups with 5 replicates per group and 10 hens per replicate. The laying hens in the 4 groups were fed the basal diet with 0 (control group), 1%, 2% and 4% silage corn seeds, respectively. The experiment lasted for seven weeks. The results showed as follows: compared with the control group, laying rate, average daily egg production, eggshell color, Haugh unit and the number of Lactobacillus in jejunum and caecum of laying hens fed the diets containing 2% and 4% silage corn seeds were increased significantly (P<0.05), while feed to egg ratio and the number of Escherichia coli in jejunum and caecum were decreased significantly (P<0.05). Average daily egg production, Haugh unit, the number of Lactobacillus in jejunum and caecum of laying hens fed the diets containing 1% silage corn seeds were increased significantly (P<0.05), while the number of Escherichia coli in jejunum and caecum was decreased significantly (P<0.05). pH of jejunum and caecum of laying hens fed the diets containing 4% silage corn seeds was decreased significantly (P<0.05). It is concluded that silage corn seeds can improve performance, egg quality and intestinal environment of laying hens, and the addition of 2% silage corn seeds to the diet is ideal.