排序方式: 共有36条查询结果,搜索用时 15 毫秒
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茜草素的抗菌活性与药效试验 总被引:2,自引:0,他引:2
用化学合成的茜草素做了体外抑菌试验、体内抗菌活性试验、人工感染猪多杀巴氏杆菌疗效试验、急性毒性试验及临床治疗试验.结果表明,茜草素在体外对金黄色葡萄球菌、变形杆菌、大肠埃希氏菌、绿脓杆菌、沙门菌和克雷伯氏菌等均有显著的抑制作用,对后4种病原菌的抑制作用超过了六茜素.在小白鼠体内对大肠埃希氏菌也有非常显著的抗菌作用.对人工感染多杀巴氏杆菌的患病仔猪有显著的治疗作用.小白鼠腹腔注射茜草素的LD50为336 mg/kg.茜草素对临床型乳牛乳腺炎的治愈率为87.5%,总有效率为100%. 相似文献
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蒙礼细 《畜牧兽医科学(电子版)》2021,(5):127-128
由多杀性巴氏杆菌引起的牛巴氏杆菌病对我国畜牧业造成极大危害。发病中常造成内脏的广泛出血又被称为出血症,在感染健康家禽和家畜后,迅速发病,传染力极强,既可直接传染,又可间接传染,一年四季均可发病,在局部区域内可引起广泛的流行,危害巨大,因此,及时诊断和和科学的防治对于养殖业的防疫和管理具有极大指导意义。 相似文献
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Five monoclonal antibodies (MAbs: F2B1, 1E4, 13B10, 4D4 and F3G12) were produced against lysed Photobacterium damselae ssp. piscicida ( Ph. d . ssp. piscicida ). The MAbs recognized three antigens of differing molecular weight on the Western blot of Ph. d . ssp. piscicida . They also cross-reacted with five different species of Vibrio . An enzyme linked immunosorbent assay (ELISA) with MAbs, F3G12 and 4D4 demonstrated differences between Ph. d . ssp. piscicida and three Ph. d . ssp. damselae type strains, indicating differences in the surface antigenicity between these two groups of bacteria. Antigen retrieval in conjunction with immunohistochemistry (IHC) using MAb 13B10, revealed colonies of bacteria in the kidney, spleen and liver of sea bass, Dicentrarchus labrax , infected with pasteurellosis. A number of positive colonies were observed around the mucosal layers of the intestinal tissue, especially within the lamina propria. In addition, a number of bacterial colonies were associated with red blood cells and blood vessels of the organs examined. 相似文献
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溶血性巴氏杆菌病是一种急性败血性疾病,可致动物急性败血型病和肺炎,病程短,死亡率高。对野生动物及家畜危害极大,发病动物多是膘好体健者,气候骤变是发病诱因之一。 相似文献
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