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Biblioteca(s):  Embrapa Unidades Centrais.
Data corrente:  30/12/2016
Data da última atualização:  29/12/2017
Autoria:  GIRARDINI, L. K.; PAIM, D. S.; LOPES, G. V.; PELLEGRINI, D. C. P.; BRITO, M. A. V. P.; CARDOSO, M.
Afiliação:  LILIAN K. GIRARDINI, Universidade do Oeste de Santa Catarina/FMV; DANIEL S. PAIM, UFRGS; GRACIELA V. LOPES, UFRGS; DEBORA C. P. PELLEGRINI, Universidade Federal do Pampa; MARIA APARECIDA V PAIVA E BRITO, CNPGL; MARISA CARDOSO, UFRGS.
Título:  Antimicrobial resistance profiles of Staphylococcus aureus clusters on small dairy farms in southern Brazil.
Ano de publicação:  2016
Fonte/Imprenta:  Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 10, p. 951-956, out. 2016.
Idioma:  Inglês
Conteúdo:  In intensive dairy farming, persistent intramammary infection has been associated with specific Staphylococcus (S.) aureus strains, and these strains may be resistant to antimicrobials. The objective of this study was to evaluate the antimicrobial resistance phenotypes of S. aureus isolates and to assess the distribution and the persistence of clonal groups in small dairy herds of southern Brazil. Milk samples were collected from all lactating cows from 21 dairy farms over a two-year period, totaling 1,060 samples. S. aureus isolates were tested for susceptibility to thirteen antimicrobials using the disk diffusion method. The total DNA of the isolates was subjected to SmaI digestion followed by pulsed-field gel electrophoresis (PFGE). Banding patterns differing by ?4 bands were considered members of a single PFGE cluster. The frequency of S. aureus isolation ranged from 3.45% to 70.59% among the 17 S. aureus-positive herds. Most S. aureus isolates (87.1%) were susceptible to all antimicrobials; resistance to penicillin (18.2%) was the most frequently observed. The 122 isolates subjected to macrorestriction analysis were classified into 30 PFGE-clusters. Among them, only 10 clusters were intermittent or persistent over the two-year period. The majority (93.6%) of isolates belonging to persistent and intermittent clusters were susceptible to all tested antimicrobials. S. aureus intramammary colonization in small dairy farms of southern Brazil is most frequently caused by spor... Mostrar Tudo
Palavras-Chave:  Grupo clonal; Mastistis.
Thesagro:  Mamite.
Thesaurus NAL:  Methicillin-resistant Staphylococcus aureus; Pulsed-field gel electrophoresis.
Categoria do assunto:  --
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/item/152571/1/Antimicrobial-resistance-profiles.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Unidades Centrais (AI-SEDE)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
AI-SEDE60403 - 1UPEAP - DD
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