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硫辛酸对大鼠生长性能影响的剂量效应研究 被引量:1

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摘要 试验以大鼠为模型,研究日粮中添加不同水平硫辛酸对生长性能及肠道发育的影响。选取72只断奶SD大鼠,随机分配到6个日粮处理组中。以玉米淀粉-酪蛋白为基础配制日粮,不同处理组硫辛酸水平分别为0(空白对照组)、12.5、25、125、250mg/kg,另设金霉素对照组以排除感染(200mg/kg)。结果表明:与空白对照组相比,添加低剂量(12.5、25mg/kg)硫辛酸对大鼠生长性能、粪中微生物及肠道发育没有负面影响(P>0.05),而添加高剂量硫辛酸(125、250mg/kg)会显著抑制大鼠生长性能,减少粪中有益微生物数量,并显著抑制大鼠肠道发育(P<0.05)。结果显示,日粮中添加低剂量硫辛酸不会影响动物的生长性能,大鼠日粮的添加剂量上限是25mg/kg。
出处 《中国畜牧杂志》 CAS 北大核心 2009年第23期43-46,共4页 Chinese Journal of Animal Science
基金 教育部高校博士点基金(200800191018) 中国农业大学科研启动基金(2007023) 国家自然科学基金(30800790)
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