|
|
|
|
|
| Oliveira,ES; Cardozo,MV; Borzi,MM; Borges,CA; Guastalli,EAL; Ávila,FA. |
| ABSTRACT Avian pathogenic Escherichiacoli (APEC) virulence mechanism has been continuously studied and it is believed to be multifactorial and because of this, this work aimed to characterize potentially APEC strains isolated from free-range hens. Isolates were submitted to PCR for the detection of virulence genes, which were of high prevalence. In vivo inoculation of day-old chicks revealed that 49 of these strains were of high and intermediate pathogenicity. In addition, isolates were submitted to antimicrobials susceptibility test with the majority of the strains presenting multiresistance. Phylogenetic analysis showed a greater presence of potentially APEC isolates in-group B2. In addition, high heterogeneity was detected among the isolates byXbaI... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: APEC; Backyard chickens; Colibacillosis; Pathogenicity; Virulence factors. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100326 |
| |
|
|
| Barrios,PR; Marín,SY; Resende,M; Rios,RL; Resende,JS; Horta,RS; Costa,MP; Martins,NRS. |
| The occurrence of CAV in backyard chickens in the metropolitan area of Belo Horizonte, Brazil, was evaluated. The spleen and thymus of chickens from different origins were collected for DNA extraction and nested-PCR. CAV genome was detected in 30% of the flocks (n=20) examined. CAV origin for backyard chickens is speculated, taking into consideration its widespread incidence in the chicken industry, the contamination of live vaccines with CAV prior to its eradication from SPF flocks, and the use of attenuated CAV vaccines. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Backyard chickens; CAV; Chicken; Chicken infectious anemia virus. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200010 |
| |
|
|
| Hadipour,MM. |
| Since 1998, an epidemic of avian influenza occurred in the Iranian poultry industry. The identified agent presented low pathogenicity, and was subtyped as an H9N2 avian influenza virus. Backyard chickens can play an important role in the epidemiology of H9N2 avian influenza virus infection. Close contact of backyard chickens with migratory birds, especially with aquatic birds, as well as neighboring poultry farms, may pose the risk of transmitting avian influenza virus, but little is known about the disease status of backyard poultry. A H9N2 avian influenza virus seroprevalence survey was carried out in 700 backyard chickens from villages around the Caspian Sea, Northern Iran, using the hemagglutination-inhibition (HI) test. The studied backyard chickens... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avian Influenza virus; Backyard chickens; Caspian Sea; H9N2; Seroprevalence; Iran; HI. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100008 |
| |
|
|
| Camillo,G; Cadore,GC; Ferreira,MST; Braünig,P; Maciel,JF; Pivoto,FL; Sangioni,LA; Vogel,FSF. |
| Toxoplasma gondii and Neospora caninum are two intracellular apicomplexan protozoa with worldwide distribution, and are responsible for reproductive disorders in sheep and cattle. These protozoa may infect a wide variety of domestic and wild animals, including birds, and backyard chickens can be used as sentinels of their infection. Parasites investigation in backyard chickens may be useful for the evaluation of environmental contamination with oocysts, of the disease cycle, and of risk factors associated with public health. The aim of this study was establish the importance of backyard chickens as T. gondii and N. caninum hosts. A number of 137 serum samples were collected from chickens in 23 farms in Rio Grande do Sul State, Brazil, and tested for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Backyard chickens; Neosporosis; Public health; Toxoplasmosis. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000200263 |
| |
|
|
| Silva,PS da; Batinga,T de B; Sales,TS; Herval,EFG; Ramos,I; Maia,PCC; Fernandes,LMB. |
| This paper describes the identification of an outbreak of fowlpox in backyard chickens in two villages the state of Bahia, the intervention strategy to control the disease by adopting health measures and vaccination, as well as the impact of the intervention. The diagnosis was based in clinical and laboratory data. After the diagnosis was confirmed, control measures and the vaccination of non-infected birds were recommended. Finally, the impact of the intervention on re-incidence of the disease was evaluated. A number of 700 chickens was vaccinated, after which only 9% of the farmers reported the occurrence of new cases, and 70% informed the acquisition of new birds after vaccination. The information reported in this paper can be useful to design strategic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Backyard chickens; Control and prevention; Fowlpox. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200007 |
| |
|
|
|
