NDLI: Behavior Of Salmonella Heidelberg and Salmonella Enteritidis Strains Following Broiler Chick Inoculation: Evaluation Of Cecal Morphometry, Liver And Cecum Bacterial Counts And Fecal Excretion Patterns.

Content Provider	PubMed Central
Author	Borsoi, Anderlise Santos, Luciana Ruschel Do Rodrigues, Laura Beatriz Moraes, Hamilton Luiz De Souza Salle, Carlos Tadeu Pippi Nascimento, Vladimir Pinheiro Do
Copyright Year	2011
Abstract	Over 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 SE-infected 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.
Related Links	http://dx.doi.org/10.1590/s1517-83822011000100034
Ending Page	273
Page Count	8
Starting Page	266
File Format	PDF
ISSN	15178382
e-ISSN	16784405
Journal	Brazilian Journal of Microbiology
Issue Number	1
Volume Number	42
Language	English
Publisher	Sociedade Brasileira de Microbiologia
Publisher Date	2011-03-01
Access Restriction	Open
Rights Holder	Sociedade Brasileira de Microbiologia
Subject Keyword	Microbiology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Microbiology

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