荷斯坦牛乳源金黄色葡萄球菌流行性及其与乳源总菌群的耐药性分析

›› 2014, Vol. 41 ›› Issue (10): 213-218.

荷斯坦牛乳源金黄色葡萄球菌流行性及其与乳源总菌群的耐药性分析

安晶¹, 王晓¹, 王新², 郭刚³, 王雅春¹, 俞英¹

1. 中国农业大学动物科技学院, 北京 100193;
2. 西北农林科技大学食品学院, 陕西杨凌 712100;
3. 北京三元绿荷奶牛养殖中心, 北京 100076

收稿日期:2014-05-28 出版日期:2014-10-20 发布日期:2014-10-29
通讯作者: 俞英 E-mail:yuying@cau.edu.cn
作者简介:安晶(1991－),女,山西人,硕士生,研究方向:动物分子抗病育种;王晓(1988－),男,山东人,硕士,研究方向:动物分子数量遗传学。
基金资助:
中央高校基本科研业务费专项(15054204、2011JS-006);国家自然科学基金(31272420);农业部奶业体系项目(CARS-37-04B);十二五国家科技支持项目(2011BAD28B02);长江学者与创新团队发展计划(IRT1191)

Prevalence and Antimicrobial Resistance of Staphylococcus aureus and Total Coliforms Isolated from Holstein Milk

AN Jing¹, WANG Xiao¹, WANG Xin², GUO Gang³, WANG Ya-chun¹, YU Ying¹

1. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
2. College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China;
3. Beijing Sanyuan Lvhe Dairy Cattle Center, Beijing Sanyuan Breeding Technology Co., Ltd., Beijing 100076, China

Received:2014-05-28 Online:2014-10-20 Published:2014-10-29

摘要/Abstract

摘要： 本研究旨在检测并对比分析中国北方地区3个荷斯坦牛场乳源金黄色葡萄球菌(Staphylococcus aureus,简称金葡菌)的流行情况及乳汁中总菌群的抗生素耐药性。试验采集北方地区3个荷斯坦牛场的生产群奶样、大罐奶样和临床型乳房炎牛奶样共181份,首先采用Baird-Parker选择性培养基对金葡菌进行分离纯化;再采用特异性PCR方法鉴定含金葡菌特异基因nuc的金葡菌菌株;最后采用琼脂稀释法检测奶样中总菌群及金葡菌对14种抗生素的耐药性。结果发现,181份奶样带菌率为100%;金黄色葡萄球菌检出率为16.03%,分离纯化了48株金葡菌。奶样总菌群耐药性检测结果表明,中国北方地区3个荷斯坦牛场对于β-内酰胺类抗生素(苯唑西林、氨苄西林、头孢西丁、头孢哌酮)耐药性均较高,达89%以上;对红霉素、利福平、四环素、万古霉素、甲氧苄啶/磺胺甲噁唑、阿莫西林/克拉维酸的耐药性达80%以上;对氯霉素的耐药率过半;仅对阿米卡星耐药率较低(18%~58%)。对金葡菌耐药性检测结果显示,3个牛场金葡菌对环丙沙星、头孢西丁和甲氧苄啶/磺胺甲噁唑有较高耐药性,但均对阿米卡星、氯霉素、加替沙星和万古霉素敏感。3个牛场绝大多数菌株都产生了多重耐药谱。研究结果为奶牛场乳源总菌群、金葡菌耐药性情况及科学用药提供试验数据。

关键词: 牛奶样; 金黄色葡萄球菌; 总菌群; 琼脂稀释法

Abstract: The aim of the study was to investigate and compare the prevalence and antimicrobial resistance profiles of Staphylococcus aureus (S.aureus) and total coliforms isolated from cow milk at three Chinese Holstein herds in northern China region.A total of 181 milk samples including productive group,milk from tank and mastitis of three dairy farms were collected and screened for the presence of S.aureus incubated onto Baird-Parker agar.S.aureus islolates were characterized using PCR for its unique nuc gene.Agar dilution method was used for the detection of antimicrobial profiles of S.aureus and the milk samples.Of the 181 milk samples,100% were contaminated with the microorganisms,16.03% were positive for S.aureus (n=48).For the total coliforms,the resistance was most frequently observed to the beta-lactam antibiotic (oxacillin,ampicillin,cefoxitin,cefoperazone),which was above 89%;followed by erythrocin,rifampicin,tetracycline,vancomycin,trimethoprim,amoxycillin/clavulanate potassium with above 80%;chloramphenicol (above 50%);the least was amikacin (18% to 58%).The antimicrobial resistance profiles of S.aureus in three herds indicated that a high degree of resistance was observed for ciprofloxacin,cefoxitin and trimethoprim;while they were sensitive to amikacin,chloramphenicol,gatifloxacin and vancomycin.The majority of the isolates were multidrug resistance.The results laid a foundation for improving the udder health and treating the mastitis scientifically.

Key words: cow milk; Staphylococcus aureus; total coliforms; agar dilution method

中图分类号:

S852.61⁺1

安晶, 王晓, 王新, 郭刚, 王雅春, 俞英. 荷斯坦牛乳源金黄色葡萄球菌流行性及其与乳源总菌群的耐药性分析[J]. , 2014, 41(10): 213-218.

AN Jing, WANG Xiao, WANG Xin, GUO Gang, WANG Ya-chun, YU Ying. Prevalence and Antimicrobial Resistance of Staphylococcus aureus and Total Coliforms Isolated from Holstein Milk[J]. , 2014, 41(10): 213-218.

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