共查询到19条相似文献,搜索用时 93 毫秒
1.
对6头患有急性乳腺炎奶牛的24个乳区进行细菌的分离培养和初步的生化鉴定,检出葡萄球菌7株,无乳链球菌6株,大肠杆菌10株,棒状杆菌2株,分别占细菌检出数的28%,24%,40%,8%。 相似文献
2.
3.
4.
5.
采集具有临床型乳腺炎奶牛的奶样,经细菌的分离培养、纯培养和生化试验,以确定奶牛临床型乳腺炎的致病菌种类。结果发现患临床型乳腺炎奶牛的致病菌和占分离菌株的百分率为:腐生葡萄球菌19.7%、金黄色葡萄球菌16.5%、兽疫链球菌17.3%、停乳链球菌9.4%、乳房链球菌3.9%、无乳链球菌1.6%、产气肠杆菌17.3%、聚团肠杆菌4.7%、奇异变形杆菌3.0%、大肠杆菌3.0%、蜡样芽胞杆菌3.0%,样品中单纯感染与混合感染的百分率分别为66.0%和27.8%。 相似文献
6.
7.
8.
9.
奶牛急性乳腺炎病原菌的分离与鉴定 总被引:1,自引:1,他引:1
为了查明乳腺炎的主要致病菌, 试验对来自不同奶牛场的25头患急性乳腺炎奶牛进行了病原菌的分离与鉴定。从阜新、锦州两地6个牛场共分离出26株目的菌, 16株为金黄色葡萄球菌, 10株为B群链球菌。葡萄球菌和链球菌检出率分别占病原菌检出数的61 54% ( 16 /26 ) 和38 46% (10 /26)。 相似文献
10.
奶牛乳腺炎主要病原菌致病性研究 总被引:1,自引:0,他引:1
《当代畜禽养殖业》2008,(4)
奶牛乳腺炎是奶牛的常见病和多发病,是造成奶牛业经济损失的主要疾病之一。对奶牛乳腺炎主要病原菌致病性的研究,将为我国成功控制奶牛乳腺炎的流行奠定基础。应用已分离鉴定的奶牛乳腺炎主要病原菌,给小白鼠腹腔注射,通过临床症状观察和病理学检查研究其致病性。结果表明,奶牛乳腺炎主要病原菌对实验小白鼠均可产生致病性,各组织器官出现了不同程度的病理变化。 相似文献
11.
12.
13.
14.
奶牛乳房炎是影响世界奶牛业发展的最主要疾病之一,不仅给奶牛养殖业带来严重的经济损失,而且还影响牛奶的产量和质量,危及人类健康。引起奶牛乳房炎的病因很复杂,但最主要的病因是病原微生物感染,其中葡萄球菌、链球菌和肠道菌感染是引起奶牛乳房炎的最主要病原菌。为有效治疗奶牛乳房炎,对奶牛乳房炎病原菌的早期快速诊断至关重要。作者对目前用于奶牛乳房炎病原菌诊断的常规微生物生化鉴定法、全自动微生物鉴定系统、刃天青微量板法、免疫诊断法、核酸探针杂交、16S rRNA基因序列测定、PCR、基因芯片及环介导等温扩增技术等的研究进展进行了综述,并比较分析了这些方法的优缺点,同时对未来奶牛乳房炎病原菌诊断的研究方向和前景进行了展望,以期为进一步开发快速、特异、敏感的奶牛乳房炎病原菌诊断技术提供理论依据。 相似文献
15.
WANG Dan YANG Feng LI Xin-pu LUO Jin-yin LIU Long-hai ZHANG Zhe ZHANG Ya-ru ZHANG Li-li LI Hong-sheng 《中国畜牧兽医》2017,44(6):1811-1817
Dairy cow mastitis is one of the most costly diseases affecting the development of the world dairy industry. It causes a serious economic loss to dairy farming, and affects the yield and quality of milk, endangers human health. The cause of dairy cow mastitis is complex, but the main cause is pathogen infection, particularly Staphylococcus, Streptococcus and intestinal bacterial infection. The rapid diagnosis of pathogenic bacteria of mastitis is crucial for the effectively treatment of the dairy cow mastitis. In order to provide theoretical basis for developing rapid, specific and sensitive of dairy cow mastitis pathogens diagnosis, the author summarized the microbiological and biochemical assay method in routine used of dairy cow mastitis pathogen diagnosis, automatic microbial identification system, resazurin trace plate method, immune diagnosis method, the nucleic acid probe hybridization, 16S rRNA gene sequences of sequencing, PCR, gene chip and LAMP etc, and analyzed the advantages and disadvantages of these methods. 相似文献
16.
为查明甘肃省某奶牛场发生临床型奶牛乳房炎的主要病原菌并选择治疗用敏感药物,随机无菌采集了6份临床型病牛乳样和1份大罐乳样,采用划线分离、菌落形态观察、革兰染色镜检、生化鉴定及16S rDNA序列分析等方法进行细菌分离鉴定,同时采用K-B法测定主要分离菌株对抗菌药物的敏感性。结果表明,从临床型乳房炎乳样中分离鉴定出大肠埃希菌、芽胞杆菌、凝固酶阴性葡萄球菌(腐生葡萄球菌)3种细菌,其中大肠埃希菌的分离率最高,为66.67%;从大罐奶样中也分离出大肠埃希菌。药敏试验结果表明,大肠埃希菌对氨苄青霉素、阿莫西林、头孢噻吩、杆菌肽、红霉素均存在不同程度的耐药,耐药率为29%~100%;对诺氟沙星、恩诺沙星、氟苯尼考、头孢哌酮等药物敏感。说明此次牛场临床型乳房炎的主要病原菌是大肠埃希菌、葡萄球菌和芽胞杆菌,而且分离的大肠埃希菌具有多重耐药性。根据检测分析结果,给奶牛场提出针对性的防控措施,临床型乳房炎的发病率下降,病情得以控制。 相似文献
17.
YAO Wei YU Xue-wu CAO Dong ZHAO Xiao-tong GU Gui-bo CHEN Yao ZHANG Lei LIU Yao-chuan FENG Jun-ke 《中国畜牧兽医》2016,43(11):3080-3084
In order to understand the main bacterial pathogen species causing dairy cow mastitis in Liaoning, as well as the characteristics of drug sensitivity of the pathogenic E.coli,the milk samples from 75 dairy cows with clinical manifestations for mastitis in certain large-scale dairy farm in Liaoning were collected.The bacteria in milk were cultured and isolated with biochemical methods and in vitro drug sensitivity tests were processed with the isolated E.coli strains.The results showed that the main bacterial pathogen for dairy cow mastitis were E.coli(separation rate 58.7%),S.aureus(64.0%)and S.agalactiae(54.7%),and multiple infection including double and triple infection were identified.The drug sensitivity tests on the isolated E.coli indicated that the E.coli isolates were highly resistant to sulfonamides(resistance rate>85%)and chloramphenicol(resistance rate>30%),and they were relatively low resistant to ampicillin(9.5%),ciprofloxacin(9.5%),ceftiofur(7.1%)and ofloxacin(4.8%).The results was able to provide reliable theoretical basis for prevention and control of dairy cow mastitis in Liaoning area. 相似文献
18.
为了掌握辽宁地区奶牛乳房炎主要细菌性病原种类及致奶牛乳房炎大肠杆菌药物敏感性特征,本研究选取辽宁地区某大型奶牛场75头临床表现为乳房炎的奶样进行细菌培养与分离,通过生化方法对分离到的细菌进行鉴定,并对分离到的奶牛源大肠杆菌进行体外药物敏感性试验研究。结果发现,该场奶牛乳房炎细菌性病原主要为大肠杆菌、葡萄球菌和链球菌,其检出率分别为58.7%、64.0%和54.7%,存在二重感染和三重感染等混合感染的情况。大肠杆菌药物敏感性试验结果表明,该场分离株对磺胺类药物(耐药率>85%)及氯霉素类药物(耐药率>30%)耐药性较高,对氨苄西林(9.5%)、环丙沙星(9.5%)、头孢噻呋(7.1%)和氧氟沙星(4.8%)比较敏感。上述研究结果为该地区奶牛乳房炎的防制提供可靠的理论依据。 相似文献