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dc.contributor.authorBorsoi, Anderlisept_BR
dc.contributor.authorSantos, Luciana Ruschel dospt_BR
dc.contributor.authorRodrigues, Laura Beatrizpt_BR
dc.contributor.authorMoraes, Hamilton Luiz de Souzapt_BR
dc.contributor.authorSalle, Carlos Tadeu Pippipt_BR
dc.contributor.authorNascimento, Vladimir Pinheiro dopt_BR
dc.date.accessioned2011-08-04T06:01:05Zpt_BR
dc.date.issued2011pt_BR
dc.identifier.issn1517-8382pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/30522pt_BR
dc.description.abstractOver the years, Salmonella Heidelberg (SH) has gained prominence in North America poultry production and in the poultry production of other countries. Salmonella Heidelberg has been isolated and reported from poultry and poultry products in Brazil since 1962, whereas Salmonella Enteritidis (SE) has only emerged as a serious problem in poultry and public health since 1993. These strains of Salmonella can cause intestinal problems in newly hatched chicks, and infection may persist until adulthood. Upon slaughter of chickens, Salmonella can contaminate carcasses, a condition that poses a threat to human health. The aim of this study was to compare the fecal excretion of Salmonella Enteritidis and Salmonella Heidelberg in newly hatched chicks (orally inoculated with 105ufc/mL each) until 20 days of age. In addition, the ratio of cecal villus height:crypt depth (morphometry) and liver and cecum cell counts was analyzed in chicks ranging from 0 to 3 days of age and infected with these two Salmonella strains. One hundred seventeen chicks were separated into one of three experimental groups: a control group, an SEinfected group and an SH-infected group. Eight chicks per group were euthanized at 6, 12 and 72 hours post-inoculation (pi) to allow for Salmonella isolation from the liver and cecum and for the collection of the cecum for villi and crypt analysis. Other birds were allowed to mature to 20 days of age and cloacal swabs were taken at 2, 6, 13 and 20 days pi to compare the fecal excretion of inoculated strains. The Salmonella Enteritidis group had a higher number of cells excreted during the trial. Both strains were isolated from the liver and cecum by 6h pi. At 12h pi the Salmonella Heidelberg group had high cell counts in the cecum. No difference was found in liver cell counts. Both strains showed lower villus height:crypt depth ratio than the control group post-infection.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofBrazilian journal of microbiology. São Paulo, SP. Vol. 42, n. 1 (jan./mar. 2011), p. 266-273pt_BR
dc.rightsOpen Accessen
dc.subjectSalmonella : Avespt_BR
dc.subjectSalmonella Heidelbergen
dc.subjectSalmonella enteritidisen
dc.subjectSalmonella Heidelbergpt_BR
dc.subjectSalmonella enteritidispt_BR
dc.subjectFecal Excretionen
dc.subjectVillus: crypt ratioen
dc.subjectBroileren
dc.titleBehavior of Salmonella heidelberg and salmonella enteritidis strains following broiler chick inoculation: evaluation of cecal morphometry, liver and cecum bacterial counts and fecal excretion patternspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000768078pt_BR
dc.type.originNacionalpt_BR


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