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育成母牛日粮营养进食量对粪能排出量的影响 被引量:1

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摘要 本试验旨在研究日粮营养进食量与粪能排出量的关系,选取32头西门塔尔杂交育成母牛进行消化代谢试验,对其营养成分粗蛋白(CP)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)及粪能排出量进行分析计算。结果表明:同一试验不同日粮处理间粪能排出量差异显著(P<0.05),同一试验粪能排出量随日粮NDF或ADF进食量减少而下降(P<0.05);同一试验中蛋白质进食量与粪能排出呈反比,日粮蛋白质进食增加,粪能排出减少;育成母牛粪能排出量Y=8.651-196.94X2+342.71X3(P<0.01,R2=0.82,n=32),其中,Y为育成母牛粪能排出量(MJ/d);X1为干物质采食量(kg/d);X2为NDF采食量(kg/d);X3为ADF采食量(kg/d)。综合分析,用NDF(X2)和ADF(X3)采食量来估测肉牛粪能排出量是可行的。
出处 《中国畜牧杂志》 CAS 北大核心 2012年第19期51-53,共3页 Chinese Journal of Animal Science
基金 农业公益性行业科研专项(nyhyzx07-035) 动物营养学国家重点实验室资助自选项目(2004DA125184(团)0802)
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