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| Coura,Fernanda Morcatti; Diniz,Soraia de Araújo; Silva,Marcos Xavier; Oliveira,Cairo Henrique Sousa de; Mussi,Jamili Maria Suhet; Oliveira,Camila Stefanie Fonseca de; Lage,Andrey Pereira; Heinemann,Marcos Bryan. |
| ABSTRACT: This study aimed to determine the virulence factors, phylogenetic groups, and the relationships between pathovars and phylogenetic groups of E. coli strains isolated from feces of buffalo calves. A total of 217 E. coli strains were obtained from feces after culture and were screened by PCR for detection of virulence factors EAST-1, enterohemolysin, Saa, CNF2, F41, F5, STa, intimin, Stx1 and Stx2. One hundred and thirty-four isolates were positive for one or more virulence factors: eighty-four from diarrheic animals, and fifty from non-diarrheic calves. The pathovars of E. coli identified in diarrheic feces were ETEC (F5+) (2/84), NTEC (16/84), STEC (20/84), EPEC (3/84), EHEC (3/84), and EAEC (EAST-1+) (33/84). Pathovars identified in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Buffalo calves; Diarrhea; Escherichia coli; Pathovars; Phylogenetic group. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000500451 |
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| Oliveira,Tiago Mendonça de; Teixeira,Cristina Mara; Arcebispo,Thiago Luiz Mendes; Antunes,Karla Dias; Rezende,Leandro do Carmo; Cunha,Lucas Maciel; Diniz,Soraia de Araújo; Silva,Marcos Xavier. |
| ABSTRACT: This study was accomplished with the aim to evaluate and to characterize the risks for the presence of Megninia spp. in poultry farms from Minas Gerais, using for that Correspondence Analysis (CA). A secondary database was used and adapted for this study, with information from 402 chicken houses of 42 laying hens commercial properties. Variables used to compose the correspondence model were selected through tests of Qui-square being considered the significant result of P≤0,05. A risk index was built to the presence of Megninia spp. starting from variables considered as risk factors for the presence of those ectoparasites. The CA graph produced for the epidemiological characterization of the presence of Megninia spp. presented an accumulated... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Megninia spp.; Risk index; Correspondence analysis. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900501 |
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