Fecha/hora: 08/06/2024 17:40:55

Biblioteca(s): 	INIA Las Brujas.	
Fecha corriente: 	02/12/2022	
Fecha de la última actualización: 	02/12/2022	
Autoria: 	DE LOS SANTOS, R.; GONZÁLEZ-REVELLO, Á.; MAJUL, L.; UMPIÉRREZ, A.; ALDROVANDI, A.; GIL, A.; HIRIGOYEN, D.; ZUNINO, P.	
Afiliación: 	ROSARIO DE LOS SANTOS, Departamento de Ciencia y Tecnología de la Leche, Facultad de Veterinaria, Universidad de la República (UdelaR), Montevideo, Uruguay; ÁLVARO GONZÁLEZ-REVELLO, Departamento de Ciencia y Tecnología de la Leche, Facultad de Veterinaria, Universidad de la República (UdelaR), Montevideo, Uruguay; LUCÍA MAJUL, Departamento de Ciencia y Tecnología de la Leche, Facultad de Veterinaria, Universidad de la República (UdelaR), Montevideo, Uruguay; ANA UMPIÉRREZ, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable (IIBCE), Montevideo, Uruguay; ARIEL ALDROVANDI, Departamento de Calidad Alimentaria, Facultad de Veterinaria, Universidad de la República (UdelaR), Montevideo, Uruguay; ANDRÉS GIL, Departamento de Bioestadística e Informática, Facultad de Veterinaria, Universidad de la República (UdelaR), Montevideo, Uruguay; DARÍO JAVIER HIRIGOYEN TREVIN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Departamento de Ciencia y Tecnología de la Leche, Facultad de Veterinaria, Universidad de la República (UdelaR), Montevideo, Uruguay; PABLO ZUNINO, Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable (IIBCE), Montevideo, Uruguay.	
Título: 	Subclinical bovine mastitis associated with Staphylococcusspp. in eleven Uruguayan dairy farms.	
Año de publicación: 	2022	
Fuente/Imprenta: 	Journal of Infection in Developing Countries, April 2022, Volume 16, Issue 4, Pages 630-637. OPEN ACCESS. doi: https://doi.org/10.3855/jidc.12960	
ISSN: 	2036-6590	
DOI: 	10.3855/jidc.12960	
Idioma: 	Inglés	
Notas: 	Article history: Received 05 May 2020; Accepted 11 February 2022. -- Corresponding author: de los Santos, R.; Departamento de Ciencia y Tecnología de la Leche, Facultad de Veterinaria, UdelaR Lasplaces 1550, Montevideo, Uruguay; email:rosario.rdelos@gmail.com -- LICENSE: 
This work is licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/ ) --	
Contenido: 	ABSTRACT.- Introduction: Bovine mastitis is the most common disease affecting the dairy industry, with staphylococci being considered as one of the most significant and prevalent causes. This study aimed to assess the presence of staphylococcal subclinical mastitis (SCM) in Uruguayan dairy farms and to identify Staphylococcus aureus (SA) and non-aureus staphylococci (NAS) in milking cows. In addition, the antibiotic susceptibility of isolated staphylococci was evaluated. Methodology: We tested 546 apparently healthy milking cows from 11 farms for detecting SCM using the California Mastitis Test (CMT). The cows were not treated with antibiotics. CMT-positive samples were cultured, and colonies compatible with Staphylococcus spp. were further identified through molecular techniques. The susceptibility of the Staphylococcus spp. isolates against thirteen antibiotics was determined using the disk diffusion method. Results: Subclinical staphylococcal mastitis was present in almost all (82%) farms. SA (n = 39) was more common than NAS (n = 9) in the 48 samples tested. Isolates exhibited resistance to one, two, and even three different antibiotics. Resistance to penicillin was the most frequent among SA (23/39) and NAS (4/9). No staphylococci isolates exhibited resistance to cefoxitin, vancomycin, trimethoprim-sulfamethoxazole, erythromycin, or clindamycin. Conclusions: Staphylococcal SCM is one of the most common diseases in Uruguayan dairy farms. SA was the prevalent pathogen, however SA and NAS mastitis coexisted in many farms. NAS were identified and its distribution was similar to other countries. Penicillin had the highest and most frequent percentage of resistance. Copyright © 2022 de los Santos et al.	
Palabras-Clave: 	Antibiotic resistance; Dairy cattle; Staphylococci; URUGUAY.	
Categoría del tema: 	L20 Ecología animal	
URL: 	http://www.ainfo.inia.uy/digital/bitstream/item/16901/1/12960-Article-Text-150036-1-10-20220510.pdf	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (103282-1) - PXI - AP - DD - JIDC/2022 -  -  - DIS