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- W2911360714 abstract "本试验旨在研究不同钙水平饲粮添加维生素D3对产蛋后期蛋鸡生产性能、蛋品质、胫骨质量和血浆钙磷代谢的影响。采用3×3因子设计，即3个钙水平（3.0%、3.5%和4.0%）和3个维生素D3添加水平（0、2 500和5 000 IU/kg）。选取60周龄罗曼粉壳蛋鸡810只，随机分为9个组，每组6个重复，每个重复15只鸡。试验采用玉米-豆粕型饲粮，试验预试期1周，正试期6周。结果表明：1）与未添加维生素D3组相比，添加维生素D3组蛋鸡平均日采食量和产蛋率极显著升高（P 0.05）。2）与未添加维生素D3组相比，添加维生素D3组蛋壳强度、蛋壳重和蛋壳比重极显著升高（P 0.05）。3）不同钙水平饲粮添加维生素D3对蛋鸡胫骨强度有极显著影响（P 0.05），而饲粮钙水平为4.0%时，胫骨强度显著高于饲粮钙水平为3.0%和3.5%时（P 0.05），与3.0%钙组相比，4.0%钙组血浆碱性磷酸酶显著降低（P < 0.05）。结果显示，产蛋后期适当提高饲粮钙水平有利于蛋鸡生产性能，但维生素D3缺乏会降低生产性能，甚至引起停产；饲粮添加2 500 IU/kg维生素D3既能满足产蛋后期蛋鸡对维生素D3的需求，同时又不造成资源的浪费，节约成本。" @default.
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- W2911360714 date "2018-10-25" @default.
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- W2911360714 title "不同钙水平饲粮添加维生素D 3 对产蛋后期蛋鸡生产性能、蛋品质、胫骨质量和血浆钙磷代谢的影响" @default.
- W2911360714 doi "https://doi.org/10.3969/j.issn.1006-267x.2018.10.013" @default.
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