Most common pathogens from cows with subclinical mastitis in northwestern Paraná, Southern Brazil and their antimicrobial susceptibility

Authors

DOI:

https://doi.org/10.5433/1679-0359.2022v43n5p2385

Keywords:

Antibiotic resistance, Staphylococcus, Streptococcus.

Abstract

Considering the high prevalence of subclinical mastitis and its impacts on milk production, thematic studies are needed and can provide strategic data for its control. This study aimed at investigating the most frequent microorganisms associated with subclinical mastitis in dairy cows in the northwest State of Paraná, Brazil and its sensitivity to antibiotics. A total of 478 foremilk samples were tested. Streptococci were the most frequently genus observed (63%), followed by staphylococci (31%). Streptococcus mutans, S. sanguis, and S. uberis were the most frequently identified species. For Streptococcus spp., the antimicrobial resistance was higher for Ceftiofur, whereas for Staphylococcus spp. it was also possible to verify a high occurrence of resistance for Gentamicin + Amoxicillin. Our results strengthen the knowledge of the microbiological agent and antibiotic-resistance patterns of pathogens at regional level, targeting future strategies to reduce the environmental spread of pathogenic strains resistant to antibiotics.

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Author Biographies

Josiane Ito Eleodoro, Universidade Pitágoras

Graduate Student, Master of Science Program in Animal Health and Production, Universidade Pitágoras, UNOPAR, Arapongas, PR, Brazil.

Selwyn Arlington Headley, Universidade Estadual de Londrina

Prof. Dr., Postgraduate Program in Animal Science, Department of Preventive Veterinary Medicine, State University of Londrina, UEL, Laboratory of Animal Pathology, Londrina, PR, Brazil.

Ana Paula Kuller Zanoni, Universidade Pitágoras

Graduate Student, Master of Science Program in Animal Health and Production, UNOPAR, Arapongas, PR, Brazil.

Lucienne Garcia Pretto Giordano, Universidade Estadual de Londrina

Profa. Dra., Agrarian Science Center, Preventive Medicine Department, UEL, Londrina, PR, Brazil.

Rafael Fagnani, Universidade Pitágoras

Prof. Dr., Master of Science Program in Animal Health and Production, UNOPAR, Arapongas, PR, Brazil.

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Published

2022-11-17

How to Cite

Eleodoro, J. I., Headley, S. A., Zanoni, A. P. K., Giordano, L. G. P., & Fagnani, R. (2022). Most common pathogens from cows with subclinical mastitis in northwestern Paraná, Southern Brazil and their antimicrobial susceptibility. Semina: Ciências Agrárias, 43(5), 2385–2394. https://doi.org/10.5433/1679-0359.2022v43n5p2385

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Communication

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