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我国部分地区奶牛乳房炎源大肠杆菌生物学特性及耐药性分析
徐继英1,刘俊林2,李先波2,霍生东2,杨志强
1. 西北民族大学
2.
Characterization and Antibiotic Resistance of Ninety-five Strains of Escherichia coli Isolated from Bovine with Mastitis in Some Regions of China
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摘要 调查奶牛乳房炎源大肠杆菌的某些生物学特性及其耐药状况,以提高药物疗效,减少牛乳中药物的残留。本研究从国内7个省、市、自治区部分地区患乳房炎奶牛的乳样中分离纯化与鉴定出95株大肠杆菌(Escherichia coli),并对大肠杆菌分离株进行O血清型鉴定、小鼠(Mus musculus)致病性试验以及抗菌药物敏感性分析。研究结果显示,95株大肠杆菌共鉴定出37种血清型,覆盖了54株分离株,另有2株自凝,39株未鉴定出型,较常见血清型为093和09;大肠杆菌分离株接种小白鼠剖检可见明显病变;95株大肠杆菌对16种抗菌药物中的8种药物耐药率超过50%,青霉素的耐药率甚至达到100%,同一菌株最多耐药14种,最少耐药2种,耐药6种以上菌株占到51.58%。表明,奶牛乳房炎源大肠杆菌分离株血清型比较复杂,且对多种药物产生不同程度的耐药性,存在着严重的多重耐药情况。本研究为奶牛乳房炎疫苗的研制和乳房炎的临床治疗提供理论依据
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徐继英
刘俊林
李先波
霍生东
杨志强
关键词 奶牛乳房炎大肠杆菌血清型致病性耐药性    
Abstract:The aim of the study was to investigate that characterization and antibiotic resistance of Escherichia coli isolated from bovine mastitis in some areas of China for raising therapeutic effect and decreasing drug residues. Milk samples of clinical and subclinical bovine mastitis were collected from seven provinces in China and a total of 95 E. coli isolates were further identified by microbiological tests. Following, serotype, pathogenicity and antibiotic resistance of 95 strains were also studied. The results showed that for the 95 E. coli strains, 54 isolates were identified as 37 serogroups, 2 isolates were self-clumpinged and 39 isolates could not be serotyped, 093 and 09 serotypes were the most common serogroups. Obviously pathological changes were observed in internal organs of dissected experiment mouse(Mus musculus). Among the 95 strains, the rate of drug fast to 8 out of 16 antibacterial drugs exceeded 50%, and a same strain could resisted 14 kinds of antibacterial drugs at most and 2 kinds of antibacterial drugs at least. E. coli strains which were resistant above 6 antibacterial drugs occupied 51.58%. So we concluded that serotypes of E. coli isolates from bovine mastitis were complicate in China, and E. coli isolates had produced different level resistance to many kinds of antibacterial drugs and presented serious multiple antibiotic resistance. This research provides a theoretical basis to further prepare bovine mastitis vaccine and treat bovine mastitis clinically
Key wordsBovine mastitis    Escherichia coli    Serotype    Pathogenicity    Antibiotic resistance
收稿日期: 2012-01-05     
通讯作者: 杨志强   
引用本文:   
徐继英1,刘俊林2,李先波2,霍生东2,杨志强. 我国部分地区奶牛乳房炎源大肠杆菌生物学特性及耐药性分析[J]. , 2012, 20(9): 1035-1041.
, , , ,. Characterization and Antibiotic Resistance of Ninety-five Strains of Escherichia coli Isolated from Bovine with Mastitis in Some Regions of China. , 2012, 20(9): 1035-1041.
链接本文:  
http://journal05.magtech.org.cn/Jwk_ny/CN/     或     http://journal05.magtech.org.cn/Jwk_ny/CN/Y2012/V20/I9/1035
 
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