Risk factors associated with the occurrence of multiresistant Staphylococcus spp. isolated from bovine subclinical mastitis in northern Brazil

Authors

DOI:

https://doi.org/10.5433/1679-0359.2022v43n2p901

Keywords:

Risk factors, Mastitis, Multidrug resistance, Staphylococcus.

Abstract

Staphylococcus bacteria are often associated with subclinical bovine mastitis. This study aimed to identify multiresistant Staphylococcus spp. associated with subclinical mastitis and the associated risk factors. Twenty-three dairy farms with a history of decrease in milk production, located in the lower Acre region, Brazil, were selected. An epidemiological questionnaire was provided in all farms. All animals were examined using the California Mastitis Test (CMT) and their milk samples were collected for bacterial culture. After isolation and identification, the disk diffusion antimicrobial susceptibility test was performed against nine classes of antimicrobials. Of the 339 cows examined using the CMT, 108 had mastitis. A total of 229 milk samples were collected from individual teats. MALDI-TOF MS found isolates belonging to eight species of Staphylococcus, in 101 of these samples. S. chromogenes (58.4%) demonstrated strongest resistance to the nine classes of antimicrobial active principles. Nineteen isolates with multidrug resistance phenotypic profile were identified. This phenotypic expression indicates wide circulation of resistant genes in this species. The presence of multidrug resistance in Staphylococcus spp. in this study was correlated with lack of water for cleaning the corral, which is a preventive factor, minimizing the transmission and persistence of pathogens in the farms.

Author Biographies

Lilian Bernardina Ferreira, Universidade Federal do Acre

Master in Animal Science, Postgraduate Program in Health and Sustainable Animal Production in the Western Amazon, Universidade Federal do Acre, UFAC, Rio Branco, AC, Brazil.

Larissa de Freitas Santiago Israel, Universidade Federal do Acre

PhD in Animal Science, Postgraduate Program in Health and Sustainable Animal Production in the Western Amazon, UFAC, Rio Branco, AC, Brazil.

Renata Fernandes Rabello, Universidade Federal Fluminense

Profa Dra, Graduate Program in Applied Microbiology and Parasitology Instituto Biomédico, Universidade Federal Fluminense, UFF, Niterói, RJ, Brazil.

Guilherme Nunes de Souza, Empresa Brasileira de Pesquisa Agropecuária

Dr., Researcher at the Empresa Brasileira de Pesquisa Agropecuária, EMBRAPA, Juiz de Fora, MG, Brazil.

Rui Carlos Peruquetti, Universidade Federal do Acre

Prof. Dr., Postgraduate Program in Health and Sustainable Animal Production in the Western Amazon, UFAC, Rio Branco, AC, Brazil.

Luciana dos Santos Medeiros, Universidade Federal do Acre

Profa Dra, Postgraduate Program in Health and Sustainable Animal Production in the Western Amazon, UFAC, Rio Branco, AC, Brazil.

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Published

2022-02-25

How to Cite

Ferreira, L. B., Israel, L. de F. S., Rabello, R. F., Souza, G. N. de, Peruquetti, R. C., & Medeiros, L. dos S. (2022). Risk factors associated with the occurrence of multiresistant Staphylococcus spp. isolated from bovine subclinical mastitis in northern Brazil. Semina: Ciências Agrárias, 43(2), 901–910. https://doi.org/10.5433/1679-0359.2022v43n2p901

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Section

Communication

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