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不同精粗比底物对瘤胃细菌标记率的影响 被引量:1

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摘要 以4头安装永久瘤胃瘘管的徐淮山羊为试验动物,运用15N稳定性同位素示踪技术,研究了1:9(A)、3:7(B)、5:5(C)、7:3(D)四种精粗比底物对瘤胃细菌15N标记率的影响。结果表明:(1)细菌产量D组显著高于A组,极显著高于B组,细菌含氮量以C组最高,为5.25%;(2)细菌15N富集量、瘤胃细菌对(NH4)2SO4的利用率以C组最高,分别为367.13μg/30ml、16.79%,而B组最小,分别为257.13μg/30ml、11.65%;(3)细菌15N标记率A、B组间差异不显著,A组显著高于C、D组,B组极显著高于C、D组,C、D组间差异不显著,且1.5h为最佳标记时间。
出处 《上海畜牧兽医通讯》 2010年第1期15-17,共3页 Shanghai Journal of Animal Husbandry and Veterinary Medicine
基金 国家自然科学基金项目(30771567)
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