Characterization of Prototheca zopfii Associated with Outbreak of Bovine Clinical Mastitis in Herd of Beijing, China

被引:40
作者
Gao, Jian [1 ]
Zhang, Han-qi [1 ]
He, Jian-zhong [1 ]
He, Yang-hua [2 ]
Li, Shu-mei [3 ]
Hou, Rong-guang [1 ]
Wu, Qiao-xing [1 ]
Gao, Yang [1 ]
Han, Bo [1 ]
机构
[1] China Agr Univ, Coll Vet Med, Beijing 100193, Peoples R China
[2] China Agr Univ, Coll Anim Sci & Technol, Beijing 100193, Peoples R China
[3] Beijing Lab Anim Res Ctr, Beijing 100012, Peoples R China
关键词
Bovine mastitis; Outbreak; Prototheca zopfii; Genotype; 2; In vitro susceptibility test; DAIRY HERDS; ENVIRONMENTAL SOURCES; SHORT-COMMUNICATION; ALGA PROTOTHECA; SUSCEPTIBILITY; IDENTIFICATION; BLASCHKEAE; GENOTYPES; PROPOSAL; STRAINS;
D O I
10.1007/s11046-011-9510-y
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Prototheca zopfii (P. zopfii) has become an important cause of bovine mastitis in many countries. In the present study, to better understand the occurrence of one clinical mastitis (CM) outbreak due to P. zopfii, the molecular characterization and resistance patterns of the microalga were described. P. zopfii strains were isolated from 17 of 23 quarters, which suffered CM in the outbreak, and 7 of 46 CM recovered quarters before the outbreak, as well as 2 of 75 environmental samples in the dairy farm. All strains were identified as genotype 2 by genotype-specific PCR analysis. Results of in vitro antimicrobial and antifungal susceptibility tests indicated that these strains were resistant to majority of tested drugs, with the only exception of amphotericin B, nystatin, streptomycin, gentamicin, and amikacin. This is the first report about CM outbreak caused by P. zopfii in China. These data suggest that P. zopfii may represent a serious risk in the studied herd, and this microalga could be an important potential pathogen causing mastitis in dairy herds of Beijing.
引用
收藏
页码:275 / 281
页数:7
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