|
|
|
|
|
| Ferreira,M.R.A.; Stella,A.E.; Freitas-Filho,E.G.; Silva,T.S.; Nascimento,K.A.; Pinto,J.F.N.; Dias,M.; Moreira,C.N.. |
| ABSTRACT This study determined the distribution of stx1 and stx2 genes in Escherichia coli isolated from dairy herds with regard to animal age, season, and farm production-scale, and analyzed the phylogenetic distribution of the groups A, B1, B2, and D of 276 isolates of bovine feces Shiga toxin-producing E. coli (STEC). The stx1 profile was the most common, detected in 20.4% (202/990) of the isolates, followed by stx2 (4.54%, 45/990) and stx1+stx2 (2.92%, 29/990). The stx1 gene was detected more frequently in calves than in adult animals. In the dry season (winter), the presence of stx1+stx2 profile in cattle feces was higher than in the rainy season (summer), while no significant changes were observed between seasons for the stx1 and stx2 profiles. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Shiga toxin-producing Escherichia coli (STEC); Phylogenetic STEC groups; STEC reservoirs Stx1; Stx2. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000601807 |
| |
|
|
| Moreira,C.N.; Souza,S.N.; Barini,A.C.; Araújo,E.G.; Fioravanti,M.C.S.. |
| This study aimed to determine the power of the serum aspartate aminotransferase (AST) and gamma-glutamyltransferasase (GGT) activities and of the albumin and cholesterol dosages for detecting hepatic histopathological injuries. A total of 220 healthy male Nelore cattle that had been extensively bred were evaluated. Blood and liver samples were collected on the day of slaughter for biochemical and histopathological tests. The results showed that the sensitivity to AST, GGT, albumin, and cholesterol tests were respectively 22.4%, 22.4%, 36%, and 37.2%. The specificity of AST, GGT, albumin, and cholesterol tests was respectively 78.8%, 90.4%, 75.6%, and 68.3%. In short, the detection of minor liver injuries through biochemical tests is limited; however, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beef cattle; Albumin; AST; Cholesterol; Clinical biochemistry; GGT. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000600001 |
| |
|
|
|
