Mechanism of Transovarian Transmission of Salmonella enteritidis in Laying Hens
نویسندگان
چکیده
منابع مشابه
Control of Salmonella enterica serovar Enteritidis in laying hens by inactivated Salmonella Enteritidis vaccines
Salmonella Enteritidis is one of the agents that is responsible for outbreaks of human foodborne salmonellosis caused by Salmonella Enteritidis and is generally associated with the consumption of poultry products. Inactivated Salmonella Enteritidis cell vaccine is one of the available methods to control Salmonella Enteritidis in breeders and laying hens, however results in terms of efficacy var...
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Vaccination of laying hens has been successfully used to reduce egg contamination by Salmonella Enteritidis, decreasing human salmonellosis cases worldwide. Currently used vaccines for layers are either inactivated vaccines or live attenuated strains produced by mutagenesis. Targeted gene deletion mutants hold promise for future vaccines, because specific bacterial functions can be removed that...
متن کاملHorizontal transmission of Salmonella enteritidis in groups of experimentally infected laying hens housed in different housing systems.
Concerns regarding the welfare of laying hens have led to the ban of conventional battery cages in Europe from 2012 onward and to the development of alternative housing systems that allow hens to perform a broader range of natural behaviors. Limited information is available about the consequences of alternative housing systems on transmission of zoonotic pathogens such as Salmonella Enteritidis...
متن کاملQuantification of horizontal transmission of Salmonella enterica serovar Enteritidis bacteria in pair-housed groups of laying hens.
An important source of human salmonellosis is the consumption of table eggs contaminated with Salmonella enterica serovar Enteritidis. Optimization of the various surveillance programs currently implemented to reduce human exposure requires knowledge of the dynamics of S. Enteritidis infection within flocks. The aim of this study was to provide parameter estimates for a transmission model of S....
متن کاملMolting in Salmonella enteritidis-challenged laying hens fed alfalfa crumbles. I. Salmonella enteritidis colonization and virulence gene hilA response.
The objectives of this study were to enumerate Salmonella enterica serovar Enteritidis colonization in fecal, cecal, and internal organs, and to compare the level of virulence gene expression (hilA) of experimentally challenged laying hens fed different dietary molt-induction regimens. Twelve Salmonella-free Single Comb Leghorn hens (>50 wk old) hens were randomly assigned to each of 6 treatmen...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1994
ISSN: 0032-5791
DOI: 10.3382/ps.0730089