【摘要】 将360只48周龄"尼克红"蛋鸡随机分为5组,每组设3个重复,每个重复24只。试验1组为玉米基础日粮组,试验2组为小麦型基础日粮组(0.10%酶制剂组),试验3组为0.10%酶制剂组+0.5%叶黄素添加剂,试验4组为0.10%酶制剂组+1.0%叶黄素添加剂,试验5组为0.10%酶制剂组+1.5%叶黄素添加剂。预试期7天,试验期21天。结果表明,添加1.5%的叶黄素添加剂可以显著改善鸡蛋的蛋黄颜色。与小麦对照组相比,蛋黄颜色提高了188.33%(P<0.05)。与玉米基础日粮组相比,日粮添加1.5%叶黄素添加剂组鸡蛋蛋黄颜色提高了0.82%,但差异不显著(P>0.05),添加叶黄素添加剂对鸡蛋的蛋重、蛋比重、蛋形指数影响不大。更多还原

【Abstract】 Three hundred and sixty laying hens were divided into five treatment groups randomly,each of which included three replicates of 24 hens. Treatment Ⅰ was corn-based diet treatment,Treatment Ⅱ was wheat-based diet treatment(0.10% enzymes treatment),treatment Ⅲ was 0.10% enzyme treatment +0.5% vitelline colorant and treatment Ⅳ was 0.10% enzyme treatment +1.0% vitelline colorant,treatment Ⅴ was 0.10% enzyme treatment +1.5% vitelline colorant.The results of feeding trail showed that adding 0.10% enzymes to wheat-based diets greatly improved laying hens production performance,but there was little lutein in wheat.When laying hens were fed wheat-based diets,the color of egg yolk decreased and turned pale.The result showed that adding 1.5% vitelline colorant to 0.10% enzyme treatment could improve the color of egg yolk greatly.Compared with wheat-based diet treatment,1.5% vitelline colorant treatment increased the color of egg yolk by 188.33%(P<0.05).Compared with corn-based diet treatment,1.50% vitelline colorant treatment increased the color of egg yolk by 0.82%(P>0.05),and had little effect on egg weight and egg-shape index.更多还原