哈密黄芪对小鼠的亚急性毒性试验

来源 :中国畜牧兽医学会家畜内科学分会2009年学术研讨会 | 被引量 : 0次 | 上传用户:pengxianwei1986
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为了观察哈密黄芪对小鼠的亚急性毒性作用,本试验将100只小鼠随机分为5组,每组20只(雌雄各半),雄鼠标记为Ⅰ A~ⅤA组,雌鼠标记为Ⅰ B~ⅤB组,Ⅰ组为对照组,Ⅱ~Ⅴ组为试验组,分别给小鼠饲喂哈密黄芪干草粉量为基础饲料量15%,30%,45%,60%的混合饲料,连续饲喂5周,记录小鼠体重、临床症状及主要血液学指标变化,并采集小鼠主要组织器官制作石蜡及透射电镜切片。结果显示,Ⅱ、Ⅲ组小鼠平均日增重为正值,且无明显中毒症状;Ⅳ、Ⅴ组小鼠平均日增重呈负增长,Ⅳ组小鼠饲喂11d出现明显中毒症状,但5d后症状减轻或消失,Ⅴ组小鼠饲喂7 d后出现明显中毒症状。Ⅱ~Ⅳ、ⅤB组小鼠白细胞总数先升高后降低,而ⅤA组持续降低,与对照组相比均有显著差异(P<0.05);各试验组与对照组相比,红细胞总数及血红蛋白浓度均显著降低(P<0.05),且降低程度随毒草剂量增高而加剧,各试验组间差异显著(P<0.05)。病理组织学观察可见脑、心脏、肾、脾、睾丸和卵巢等组织发生明显空泡变性。
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