Tuberculosis in bovine slaughtered in the semi-arid region of Rio Grande do Norte, Brazil

Authors

DOI:

https://doi.org/10.5433/1679-0359.2021v42n5p3047

Keywords:

Mycobacterium bovis, Public health, Slaughterhouses, Tuberculosis.

Abstract

Between November 2017 and August 2018, in order to determine the occurrence of tuberculosis in cattle slaughtered in the semi-arid region of Rio Grande do Norte, 11,610 bovine carcasses underwent a routine post-mortem inspection. One animal presented suggestive lesions and samples from lung, spleen and heart were submitted to microbiological culture in Stonebrink medium for 90 days and molecular analysis by nested-PCR. For histopathological examination and Ziehl Neelsen staining, the omentum was used. In the cultured samples, two of them (heart and spleen) showed growth, but were not confirmed as M. bovis by conventional PCR. At nested-PCR, the samples showed amplification for the TbD1 region. The presence of numerous granulomas was detected in the histopathological examination characterized by a necrotic center and areas of mineralization, as well as the presence of acid-fast bacilli (AFB) in the Ziehl-Neelsen stain. Microbiological culture can show false negative results, despite being considered a gold standard technique, although it takes time. Nested-PCR and histopathology show fast and effective results for the diagnosis of the disease. The presence of positive animals represents a public health risk in the studied region. Therefore, one of the essential systems applied to the control of bovine tuberculosis is the epidemiological surveillance of animals in slaughterhouses.

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Author Biographies

Pirajá Saraiva Bezerra Neto, Universidade Federal de Campina Grande

Student of the Master’s Course of the Graduate Program in Animal Science, Universidade Federal de Campina Grande, UFCG, Patos, PB, Brazil.

Flábio Ribeiro de Araújo, Empresa Brasileira de Pesquisa Agropecuária

Researcher at Empresa Brasileira de Pesquisa Agropecuária, EMBRAPA, Campo Grande, MS, Brazil.

Taynara Nunes Pasquatti, Empresa Brasileira de Pesquisa Agropecuária

Researcher at Empresa Brasileira de Pesquisa Agropecuária, EMBRAPA, Campo Grande, MS, Brazil.

Felício Garino Junior, Universidade Federal da Paraíba

Prof. Dr., Graduate Program in Animal Science, Universidade Federal da Paraíba, UFPB, Areia, PB, Brazil.

Giovanni Brito Medeiros, Universidade Federal de Campina Grande

Student of the Master’s Course of the Graduate Program in Animal Science, Universidade Federal de Campina Grande, UFCG, Patos, PB, Brazil.

Millena de Oliveira Firmino, Universidade Federal de Campina Grande

Student of the Doctoral Course of the Graduate Program in Science and Animal Health, UFCG, Patos, PB, Brazil.

Rosália Severo de Medeiros, Universidade Federal de Campina Grande

Profa Dra, Course in Biological Sciences, UFCG, Patos, PB, Brazil.

Severino Silvano dos Santos Higino, Universidade Federal de Campina Grande

Prof. Dr., Graduate Program in Animal Science, UFCG, Patos, PB, Brazil.

References

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Published

2021-07-02

How to Cite

Bezerra Neto, P. S., Araújo, F. R. de, Pasquatti, T. N., Garino Junior, F., Medeiros, G. B., Firmino, M. de O., … Higino, S. S. dos S. (2021). Tuberculosis in bovine slaughtered in the semi-arid region of Rio Grande do Norte, Brazil. Semina: Ciências Agrárias, 42(5), 3047–3056. https://doi.org/10.5433/1679-0359.2021v42n5p3047

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Section

Communication

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