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添加过瘤胃氯化胆碱对奶牛产奶性能的影响 被引量:2

Effects of rumen protected choline addition on milk production in dairy cows
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摘要 选取40头健康荷斯坦泌乳盛期奶牛随机分为2组,每组20头。对照组牛群饲喂基础日粮,试验组牛群在基础日粮中添加20 g(/d.头)的过瘤胃氯化胆碱,分3次饲喂,瘤胃保护胆碱直接投喂于TMR日粮上。试验期60 d。测定产奶量,牛奶中的乳脂率、乳蛋白、体细胞数。试验结果表明:在本试验条件下,试验组牛群在基础日粮中添加20 g(/d.头)的瘤胃保护胆碱后,奶牛的平均产奶量显著提高了8.28%(P<0.05),乳脂率提高了0.90%(P<0.05);乳蛋白率、乳蛋白量、乳脂量、体细胞数均无显著差异(P>0.05)。 选取40头健康荷斯坦泌乳盛期奶牛随机分为2组,每组20头。对照组牛群饲喂基础日粮,试验组牛群在基础日粮中添加20 g(/d.头)的过瘤胃氯化胆碱,分3次饲喂,瘤胃保护胆碱直接投喂于TMR日粮上。试验期60 d。测定产奶量,牛奶中的乳脂率、乳蛋白、体细胞数。试验结果表明:在本试验条件下,试验组牛群在基础日粮中添加20 g(/d.头)的瘤胃保护胆碱后,奶牛的平均产奶量显著提高了8.28%(P&lt;0.05),乳脂率提高了0.90%(P&lt;0.05);乳蛋白率、乳蛋白量、乳脂量、体细胞数均无显著差异(P&gt;0.05)。
出处 《饲料工业》 北大核心 2011年第S2期51-54,共4页 Feed Industry
关键词 过瘤胃氯化胆碱 奶牛 产奶量 采食量 rumen protected choline lactating dairy cows milk yield feed intake
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共引文献35

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