饲粮粗蛋白质水平对“京红1号”蛋鸡产蛋后期生产性能和蛋品质的影响
发布时间:2018-10-22 18:36
【摘要】:本试验旨在研究饲粮中不同粗蛋白质水平对"京红1号"蛋鸡产蛋后期生产性能和蛋品质的影响,以确定其适宜蛋白质水平。试验选用41周龄"京红1号"商品代蛋鸡720只,按实测粗蛋白质水平(分别为14.08%、14.53%、14.98%和15.44%)随机分为Ⅰ组、Ⅱ组、Ⅲ组和Ⅳ组,每组12个重复,每个重复15只鸡。预试期1周,正试期22周。结果表明:1)饲粮粗蛋白质水平对蛋鸡产蛋率、平均蛋重和日产蛋量影响显著(P0.05),且其均随饲粮粗蛋白质水平升高线性增加(P0.05);饲粮粗蛋白质水平对蛋鸡料蛋比影响显著(P0.05),且其随粗蛋白质水平升高线性降低(P0.05)。2)Ⅳ组蛋壳厚度显著高于Ⅰ组和Ⅲ组(P0.05);Ⅳ组蛋重显著高于Ⅰ组和Ⅱ组(P0.05),蛋重随着饲粮粗蛋白质水平升高线性增加(P0.05)。3)经济效益分析表明Ⅳ组蛋重成本最低,经济效益最佳。综合生产性能与经济效益分析,42~64周龄"京红1号"蛋鸡适宜粗蛋白质水平为15.44%,适宜蛋白质能量比为13.41 g/MJ。
[Abstract]:The purpose of this experiment was to study the effect of different crude protein levels in diet on the performance and egg quality of "Jinghong No. 1" laying hens at the later stage of laying, so as to determine the appropriate protein level. In this experiment, 720 41-week-old "Jinghong No. 1" commercial layers were randomly divided into 鈪,
本文编号:2287981
[Abstract]:The purpose of this experiment was to study the effect of different crude protein levels in diet on the performance and egg quality of "Jinghong No. 1" laying hens at the later stage of laying, so as to determine the appropriate protein level. In this experiment, 720 41-week-old "Jinghong No. 1" commercial layers were randomly divided into 鈪,
本文编号:2287981
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