期刊
REVISTA COLOMBIANA DE CIENCIAS PECUARIAS
卷 28, 期 2, 页码 174-180出版社
UNIV ANTIOQUIA, FAC CIENCIAS AGRARIAS
DOI: 10.17533/udea.rccp.v28n2a06
关键词
cull cattle; Mycobacterium avium subsp paratuberculosis; paratuberculosis diagnosis; ruminant farms
资金
- [PAPIIT IT225211]
Background: paratuberculosis (PTB) is clinically characterized by diarrhea and progressive weight loss in ruminants, and causes economic losses due to decreased milk production, premature animal disposal, and increased veterinary treatment costs. The presence of PTB has been increasing in milk producing bovine farms in Mexico, yet epidemiology data from specific farms remains scarce. Objective: to determine the proportion of cows positive for Mycobacterium avium subsp. paratuberculosis (Map) among culled cows. Methods: in the present study, 40 culled cows from 25 farms located at the complejo agropecuario industrial de Tizayuca (CAITSA) in Hidalgo (Mexico) were evaluated for PTB presence by histopathological and microbiological studies. Tissue and rectal scraping samples were taken from all cows, and studied for presence of histopathology PTB-compatible lesions. Samples were processed for Map isolation on selective agar culture media; typical Map colonies were confirmed by polymerase chain reaction (PCR). Results: potential PTB infection was found in 25% (10/40) of the animals evaluated by histopathology and acid-fast bacilli (AFB) staining, but only 7.5% (3/40) were positive for type 2 Map (C cattle strain) by PCR. Conclusions: the prevalence of PTB in cattle farms at CAITSA was confirmed, which may be valuable epidemiological information in Mexico.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据