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首页> 美国卫生研究院文献>Journal of Veterinary Science >Investigation of bovine tuberculosis outbreaks by using a trace-back system and molecular typing in Korean Hanwoo beef cattle
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Investigation of bovine tuberculosis outbreaks by using a trace-back system and molecular typing in Korean Hanwoo beef cattle

机译：利用回溯系统和分子分型在韩国韩宇肉牛中调查牛结核病暴发

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摘要

Bovine tuberculosis is a chronic contagious disease responsible for major agricultural economic losses. Abattoir monitoring and trace-back systems are an appropriate method to control bovine tuberculosis, particularly in beef cattle. In the present study, a trace-back system was applied to bovine tuberculosis cases in Korean native Hanwoo beef cattle. Bovine tuberculosis was detected in three index beef cattle during abattoir monitoring in Jeonbuk Province, Korea, and the original herds were traced back from each index cow. All cattle in each original herd were subjected to tuberculin skin test. The positive rates in the tuberculin skin test were 64.6% (62 of 96), 4.8% (2 of 42), and 8.1% (3 of 37) at farms A, B, and C, respectively. On post-mortem examination of 56 tuberculin-positive cattle, 62% had granulomatous lesions, and Mycobacterium bovis was cultured from 40 (71.4%) of the cattle. Molecular typing by spoligotyping and the mycobacterial interspersed repetitive unit-variable-number tandem repeat assay revealed the genotype of the M. bovis strains from the index cattle were same as the M. bovis genotype in each original herd. The results suggest that tracing back from index cattle to the original herd is an effective method to control bovine tuberculosis in beef cattle.
机译：牛结核病是一种慢性传染病，对农业造成重大经济损失。屠宰场监测和追溯系统是控制牛结核病的适当方法，特别是在肉牛中。在本研究中，追溯系统被应用于韩国本地韩宇肉牛的牛结核病病例。在韩国全北省的屠宰场监测过程中，在三头索引肉牛中发现了牛结核病，并且从每头索引奶牛中追溯了原始牛群。每个原始牛群中的所有牛都接受结核菌素皮肤测试。 A，B和C农场的结核菌素皮肤试验阳性率分别为64.6％（96个中的62个），4.8％（42个中的2个）和8.1％（37个中的3个）。在对56例结核菌素阳性牛进行死后检查时，有62％的肉芽肿病灶，从40头（71.4％）牛中培养了牛分枝杆菌。通过spoligotyping和分枝杆菌散布的重复单位可变数目串联重复重复分析的分子分型显示来自每个牛群的牛分枝杆菌的基因型与牛分枝杆菌的基因型相同。结果表明，从索引牛追溯到原始牛群是控制肉牛的牛结核病的有效方法。

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