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Abstract

Biofilm formation is considered an advantage for Staphylococcus aureus mastitis isolates, facilitating bacterial persistence in the udder. It requires attachment to mammary epithelium, proliferation and accumulation of cells in multilayers and enclosing in a polymeric matrix known as...

Author(s)
Melo, P. de C.; Ferreira, L. M.; Nader Filho, A.; Zafalon, L. F.; Vicente, H. I. G.
Publisher
Universidade Federal de Uberlândia, Uberlândia, Brazil
Citation
Bioscience Journal, 2012, 28, 1, pp 94-99
Abstract

Staphylococcus is an important agent of mastitis, especially when biofilm producers are related to a number of mechanisms of resistance to different types of infections. The objective of this research was to evaluate the susceptibility and resistance of Staphylococcus aureus strains isolates from...

Author(s)
Chagas, L. G. da S.; Melo, P. de C.; Lima, A. M. C.; Ramos, G. B.; Röder, D. von D. de B.; Nader Filho, A.
Publisher
Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
Citation
Brazilian Journal of Veterinary Research and Animal Science, 2015, 52, 3, pp 228-233
AbstractFull Text

The aim of this study is to determine the occurrence of Staphylococcus aureus strains in dairy herds of Minas Gerais, Brazil. 36 cows were used in this study and milk samples from the cows were subjected to California Mastitis Test. The strains of Staphylococcus were then subjected for genetic...

Author(s)
Souza, V. de; Cereser, N. D.; Melo, P. de C.; Conde, S. de O.; Medeiros, M. I. M. de; Nader Filho, A.
Publisher
Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Botucatu, Brazil
Citation
Veterinária e Zootecnia, 2013, 20, 2, Supl. 1, pp 100-101
Abstract

The purpose of this study was to determine the in-vitro susceptibility pattern of 72 Staphylococcus aureus strains, isolated from bovine mastitic milk. The calves were reared on 10 dairy farms in the state of São Paulo, Brazil. These strains were tested by the standardized disc diffusion method....

Author(s)
Nader Filho, A.; Ferreira, L. M.; Amaral, L. A. do; Rossi Junior, O. D.; Oliveira, R. P.
Publisher
Instituto Biológico, São Paulo, Brazil
Citation
Arquivos do Instituto Biológico (São Paulo), 2007, 74, 1, pp 1-4
AbstractFull Text

The relationship between somatic cells count (SCC) and the parities from cows with bovine mastitis caused by Staphylococcus aureus, in different breeds and climates was investigated. A dairy herd with Holstein and Brown Swiss cattle was studied from August/2005 to December/2006. The animals were...

Author(s)
Zafalon, L. F.; Arcaro, J. R. P.; Nader Filho, A.; Veschi, J. L. A.
Publisher
Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Botucatu, Brazil
Citation
Veterinária e Zootecnia, 2010, 17, 3, pp 379-386
Abstract

The present study assessed the protein fractions of the milk in 135 mammary quarters with subclinical mastitis caused by Staphylococcus aureus. The quarters were classified in two groups: treated (67) and not treated (68). The antimicrobial drug used for the treatment was gentamicin (150 mg) once a ...

Author(s)
Zafalon, L. F.; Nader Filho, A.; Carvalho, M. R. B. de; Lima, T. M. A. de
Publisher
Instituto Biológico, São Paulo, Brazil
Citation
Arquivos do Instituto Biológico (São Paulo), 2009, 76, 2, pp 149-155
AbstractFull Text

The microbiological quality of 72 samples of raw milk taken from 9 cattle rearing farms and from 12 samples of milk from a community bulk tank shared by the same farms in Gameleira region, municipality of Sacramento, MG, were evaluated. Mesophilic and psychrotrophic microorganisms were counted....

Author(s)
Souza, V.; Nader Filho, A.; Ferreira, L. M.; Cereser, N. D.
Publisher
FEPMVZ - Editora, Belo Horizonte, Brazil
Citation
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2009, 61, 3, pp 758-761
Abstract

77 Staphylococcus aureus strains isolated from milk samples obtained from 40 Holstein cows suffering from subclinical mastitis in a dairy herd in Sao Paulo, Brazil were subjected to PCR-ribotyping and in vitro susceptibility testing to 12 antimicrobial drugs. PCR-ribotyping revealed nine different...

Author(s)
Ferreira, L. M.; Nader Filho, A.; Oliveira, E. de; Zafalon, L. F.; Souza, V. de
Publisher
Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria, Brazil
Citation
Ciência Rural, 2006, 36, 4, pp 1228-1234
Abstract

A total of 72 strains of Staphylococcus aureus were examined for the production of staphylococcal enterotoxins (SE) A, B, C and D and toxic shock syndrome toxin (TSST-1). The strains were isolated from milk samples of cows with mastitis in dairy herds in São Paulo, Brazil. 38 (52.8%) isolates...

Author(s)
Nader Filho, A.; Ferreira, L. M.; Amaral, L. A.; Rossi Junior, O. D.; Oliveira, R. P.
Publisher
FEPMVZ - Editora, Belo Horizonte, Brazil
Citation
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2007, 59, 5, pp 1316-1318
Abstract

Mesophilic bacterial, total coliform and faecal coliform counts were made for 140 pasteurized milk samples. 28 samples (20.0%) were outside the legal microbiological standards and 19 samples (13.6%) were contaminated by faecal coliforms. No contaminated samples were found at one of the plants;...

Author(s)
Nader Filho, A.; Amaral, L. A. do; Rossi Júnior, O. D.; Schocken, D. L.
Citation
Higiene Alimentar, 1997, 11, 50, pp 21-23

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