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育成母牛日粮麸皮水平对营养物质消化率影响 被引量:1

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摘要 通过饲养试验,主要研究日粮含不同麸皮水平对奶用育成母牛日粮营养物质消化率的影响。选取16头15月龄体况基本一致的荷斯坦育成母牛为试验动物进行消化代谢试验。试验动物随机分为4组,每组4头牛,分别定量(3.5 kg/d)饲喂6种不同麸皮水平的精料日粮,粗料为固定给量的自由采食(8 kg/d)。4个处理组的日粮麸皮水平为0、12.8%、24.8%和44.7%。预试期为20 d,正试期为10 d,采用全收粪法收集6 d粪便。试验结果表明:在采食量和精粗比相似的情况下,日粮精料高比例(45%)麸皮明显降低奶用育成母牛日粮有机物、中性洗涤纤维和酸性洗涤纤维表观消化率,而对蛋白质表观消化率无显著影响。
出处 《饲料研究》 CAS 北大核心 2011年第12期1-2,11,共3页 Feed Research
基金 "动物营养学国家重点实验室"自选项目"2004DA125184(团)0802""现代奶业产业技术体系项目(nycytx-0402)
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