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List of works by Richard K. Gast

Age-related changes in the persistence and pathogenicity of Salmonella typhimurium in chicks.

scientific article published in November 1989

Airborne horizontal transmission of Salmonella enteritidis in molted laying chickens.

scientific article published in January 1998

Airborne transmission of Salmonella enteritidis infection between groups of chicks in controlled-environment isolation cabinets

scientific article published in April 1998

Application of flagella-based immunoassays for serologic detection of Salmonella pullorum infection in chickens

scientific article published in October 1998

Application of negative air ionization for reducing experimental airborne transmission of Salmonella enteritidis to chicks.

scientific article

Application of the agar gel precipitin test to detect antibodies to Salmonella enterica serovar enteritidis in serum and egg yolks from infected hens.

scientific article

Applying tests for specific yolk antibodies to predict contamination by Salmonella enteritidis in eggs from experimentally infected laying hens.

scientific article published in January 1997

Assessing the frequency and consequences of Salmonella enteritidis deposition on the egg yolk membrane

scientific article published in July 2001

Assessing the sensitivity of egg yolk antibody testing for detecting Salmonella enteritidis infections in laying hens

scientific article published in June 1997

Bactericidal effects of negative air ions on airborne and surface Salmonella enteritidis from an artificially generated aerosol

scientific article

Cellular assessment of crop lymphoid tissue from specific-pathogen-free white leghorn chickens after Salmonella enteritidis challenge

scientific article

Characteristics of Salmonella enteritidis contamination in eggs after oral, aerosol, and intravenous inoculation of laying hens

scientific article published in July 2002

Colonization of avian reproductive-tract tissues by variant subpopulations of Salmonella enteritidis.

scientific article published in June 2010

Colonization of internal organs by Salmonella Enteritidis in experimentally infected laying hens housed in conventional or enriched cages.

scientific article published in February 2013

Colonization of internal organs by Salmonella Enteritidis in experimentally infected laying hens housed in enriched colony cages at different stocking densities

scientific article

Colonization of internal organs by Salmonella Enteritidis in experimentally infected laying hens of four commercial genetic lines in conventional cages and enriched colony housing

scientific article published on 01 April 2019

Colonization of internal organs by Salmonella serovars Heidelberg and Typhimurium in experimentally infected laying hens housed in enriched colony cages at different stocking densities

scientific article published on 4 October 2016

Colonization of reproductive organs and internal contamination of eggs after experimental infection of laying hens with Salmonella heidelberg and Salmonella enteritidis.

scientific article published in December 2004

Colonization of specific regions of the reproductive tract and deposition at different locations inside eggs laid by hens infected with Salmonella enteritidis or Salmonella heidelberg.

scientific article

Combined effect of antibiotic and competitive exclusion treatment on Salmonella enteritidis fecal shedding in molted laying hens

scientific article

Comparison of Salmonella Enteritidis infection in hens molted via long-term feed withdrawal versus full-fed wheat middling.

scientific article published in December 2001

Comparison of Salmonella enterica serovar enteritidis levels in crops of fed or fasted infected hens

scientific article published in September 2006

Comparison of dkgB-linked intergenic sequence ribotyping to DNA microarray hybridization for assigning serotype to Salmonella enterica

scientific article published on 19 October 2012

Comparison of methods for differentiation of Salmonella enterica serovar Enteritidis phage type 4 isolates

scientific article published in May 2004

Comparison of the effects of infection with Salmonella enteritidis, in combination with an induced molt, on serum levels of the acute phase protein, alpha1 acid glycoprotein, in hens

scientific article published in September 2002

Contamination of eggs by Salmonella Enteritidis in experimentally infected laying hens housed in conventional or enriched cages.

scientific article published in March 2014

Contamination of eggs by Salmonella Enteritidis in experimentally infected laying hens of four commercial genetic lines in conventional cages and enriched colony housing

scientific article published on 01 October 2019

Crop immune response post-Salmonella enteritidis challenge in eight commercial egg-layer strains and specific-pathogen-free White Leghorn chickens

scientific article published in March 2008

Deposition of phage type 4 and 13a Salmonella enteritidis strains in the yolk and albumen of eggs laid by experimentally infected hens.

scientific article

Detecting infections of chickens with recent Salmonella pullorum isolates using standard serological methods.

scientific article published in January 1997

Detection and Enumeration of Salmonella enteritidis in Fresh and Stored Eggs Laid by Experimentally Infected Hens

scientific article published on 01 March 1992

Detection of Salmonella enterica subpopulations by phenotype microarray antibiotic resistance patterns.

scientific article published on 26 October 2007

Detection of Salmonella enteritidis in experimentally infected laying hens by culturing pools of egg contents

scientific article published in February 1993

Detection of Salmonella enteritidis in incubated pools of egg contents by fluorescence polarization and lateral flow immunodiffusion

scientific article published in April 2003

Detection of Salmonella enteritidis-specific immunoglobulin A antibodies in crop samples from chickens infected with Salmonella enteritidis

scientific article published in January 2003

Detection of Salmonella serogroup D-specific antibodies in the yolks of eggs laid by hens infected with Salmonella enteritidis

scientific article published in May 1991

Detection of airborne Salmonella enteritidis in the environment of experimentally infected laying hens by an electrostatic sampling device

scientific article published in January 2004

Detection of experimental Salmonella enteritidis and S. typhimurium infections in laying hens by fluorescence polarization assay for egg yolk antibodies

scientific article published in August 2002

Determination of close genetic relatedness of the major Salmonella enteritidis phage types by pulsed-field gel electrophoresis and DNA sequence analysis of several Salmonella virulence genes

scientific article published in October 2001

Development of a lavage procedure to collect crop secretions from live chickens for studying crop immunity

scientific article published in December 2002

Development of a lavage procedure to collect lung secretions from chickens for evaluating respiratory humoral immunity

scientific article published in October 2005

Differences in the multiplication of Salmonella enteritidis strains in liquid whole egg: implications for detecting contaminated eggs from commercial laying flocks.

scientific article published in May 1995

Effect of prior serial in vivo passage on the frequency of Salmonella enteritidis contamination in eggs from experimentally infected laying hens.

scientific article published in July 2003

Effect of refrigeration on in vitro penetration of Salmonella enteritidis through the egg yolk membrane.

scientific article published in June 2006

Effects of different litter substrates and induced molt on production performance and welfare quality parameters of white Leghorn hens housed in multi-tiered aviary system

scientific article published on 01 October 2018

Effects of kanamycin administration to poultry on the interspecies transmission of drug-resistant Salmonella

scientific article published in May 1988

Effects of kanamycin administration to poultry on the proliferation of drug-resistant Salmonella

scientific article published in May 1988

Effects of prior coinfection with different Salmonella serovars on the progression of a Salmonella enterica serovar enteritidis infection in hens undergoing induced molt.

scientific article published in January 2004

Elimination of early Salmonella enteritidis infection after treatment with competitive-exclusion culture and enrofloxacin in experimentally infected chicks.

scientific article published in October 2000

Enhanced gross visualization of chicken Peyer's patch: novel staining technique applied to fresh tissue specimens

scientific article published on 01 June 2006

Evaluation of a chick mortality model for predicting the consequences of Salmonella enteritidis infections in laying hens

scientific article published in February 1992

Evaluation of culture media for detecting airborne Salmonella enteritidis collected with an electrostatic sampling device from the environment of experimentally infected laying hens.

scientific article

Evaluation of the efficacy of an oil-emulsion bacterin for protecting chickens against Salmonella enteritidis

scientific article published in October 1992

Evaluation of the efficacy of oil-emulsion bacterins for reducing fecal shedding of Salmonella enteritidis by laying hens.

scientific article

Experimental horizontal transmission of Salmonella enteritidis strains (phage types 4, 8, and 13a) in chicks

scientific article

Flow cytometric characterization of Peyer's patch and cecal tonsil T lymphocytes in laying hens following challenge with Salmonella enterica serovar Enteritidis.

scientific article published on 13 August 2009

Frequency and Duration of Fecal Shedding of Salmonella Enteritidis by Experimentally Infected Laying Hens Housed in Enriched Colony Cages at Different Stocking Densities

scientific article published on 10 April 2017

Frequency and Duration of Fecal Shedding of Salmonella Serovars Heidelberg and Typhimurium by Experimentally Infected Laying Hens Housed in Enriched Colony Cages at Different Stocking Densities

scientific article published in September 2017

Growth of Salmonella enterica serovar Enteritidis in albumen and yolk contents of eggs inoculated with this organism onto the vitelline membrane

scientific article published in April 2005

Hen genetic strain and extended cold storage influence on physical egg quality from cage-free aviary housing system

scientific article published on 01 July 2018

Horizontal transmission of Salmonella Enteritidis in experimentally infected laying hens housed in conventional or enriched cages

scientific article published on 11 October 2014

Hyporesponsiveness of the systemic and mucosal humoral immune systems in chickens infected with Salmonella enterica serovar enteritidis at one day of age.

scientific article published in November 1999

Immersion in Boiling Water to Disinfect Egg Shells Before Culturing Egg Contents for Salmonella enteritidis

scientific article published on 01 June 1993

In vitro penetration of egg yolks by Salmonella Enteritidis and Salmonella Heidelberg strains during thirty-six-hour ambient temperature storage

scientific article published in July 2007

In vivo transfer of antibiotic resistance to a strain of Salmonella arizonae

scientific article published in February 1986

Incidence and in vitro acquisition of transferable drug resistance in Salmonella arizonae

scientific article published in May 1985

Incubation of egg contents pools at an elevated temperature (42 degrees C) does not improve the rapid detection of Salmonella enteritidis phage type 14b.

scientific article published in August 2004

Incubation of supplemented egg contents pools to support rapid detection of Salmonella enterica serovar Enteritidis.

scientific article published in April 2003

Influence of commercial laying hen housing systems on the incidence and identification of Salmonella and Campylobacter

scientific article published on 14 March 2016

Influence of the level and location of contamination on the multiplication of Salmonella enteritidis at different storage temperatures in experimentally inoculated eggs

scientific article

Intestinal colonization and organ invasion in chicks experimentally infected with Salmonella enteritidis phage type 4 and other phage types isolated from poultry in the United States

scientific article published in October 1996

Iron Supplementation to Enhance the Recovery of Salmonella enteritidis from Pools of Egg Contents

scientific article published on 01 March 1995

Isolation of Salmonella enterica serovar Enteritidis from houseflies (Musca domestica) found in rooms containing Salmonella serovar Enteritidis-challenged hens

scientific article

Isolation of Salmonella enteritidis from internal organs of experimentally infected hens

scientific article published in October 1990

Linkage of avian and reproductive tract tropism with sequence divergence adjacent to the 5S ribosomal subunit rrfH of Salmonella enterica.

scientific article published on 27 September 2006

Low Dose Infection of Hens in Lay with Salmonella enterica Serovar Enteritidis from Different Genomic Clades

scientific article published on 01 March 2020

Mechanisms of egg contamination by Salmonella Enteritidis.

scientific article

Metabolic parameters linked by phenotype microarray to acid resistance profiles of poultry-associated Salmonella enterica.

scientific article published on 11 July 2016

Microbiological impact of three commercial laying hen housing systems

scientific article published on 05 December 2014

Mucosal humoral immunity to experimental Salmonella enteritidis infection in the chicken crop

scientific article published in October 2002

Multiplication in Egg Yolk and Survival in Egg Albumen of Genetically and Phenotypically Characterized Salmonella Enteritidis Strains.

scientific article published on 30 April 2018

Multiplication in egg yolk and survival in egg albumen of Salmonella enterica serotype Enteritidis strains of phage types 4, 8, 13a, and 14b.

scientific article published in June 2001

Multiplication of Salmonella enteritidis in egg yolks after inoculation outside, on, and inside vitelline membranes and storage at different temperatures.

scientific article published in October 2010

Multiplication of Salmonella enteritidis on the yolk membrane and penetration to the yolk contents at 30 degrees C in an in vitro egg contamination model

scientific article published in September 2008

Pathotyping of Salmonella enterica by analysis of single-nucleotide polymorphisms in cyaA and flanking 23S ribosomal sequences

scientific article published in April 2007

Penetration of Salmonella enteritidis and Salmonella heidelberg into egg yolks in an in vitro contamination model

scientific article published in April 2005

Persistence of Salmonella enteritidis from one day of age until maturity in experimentally infected layer chickens.

scientific article

Persistence of fecal shedding of Salmonella Enteritidis by experimentally infected laying hens housed in conventional or enriched cages.

scientific article

Pooling of laying hen environmental swabs and efficacy of Salmonella spp. detection

scientific article published on 06 February 2020

Prevalence, Persistence, and Antimicrobial Resistance of Campylobacter spp. from Eggs and Laying Hens Housed in Five Commercial Housing Systems

scientific article published on 01 August 2018

Production of Salmonella enteritidis-contaminated eggs by experimentally infected hens

scientific article published in April 1990

Rapid Detection of Salmonella enteritidis in Pooled Liquid Egg Samples Using a Magnetic Bead-ELISA System

scientific article published on 01 September 1995

Recovery of Salmonella enterica serovar Enteritidis from hens initially infected with serovar Kentucky.

scientific article published on 14 February 2015

Recovery of Salmonella enteritidis From Inoculated Pools of Egg Contents

scientific article published on 01 January 1993

Research Note: Horizontal transmission and internal organ colonization by Salmonella Enteritidis and Salmonella Kentucky in experimentally infected laying hens in indoor cage-free housing

scientific article published on 25 August 2020

Research note: evaluation of direct plating for detecting Salmonella enteritidis in pools of egg contents.

scientific article published in August 1993

Research to understand and control Salmonella enteritidis in chickens and eggs.

scientific article published on June 1993

Review of egg-related salmonellosis and reduction strategies in United States, Australia, United Kingdom and New Zealand

scientific article published on 14 September 2017

Salmonella enteritidis deposition in eggs after experimental infection of laying hens with different oral doses.

scientific article published in January 2013

Selection and characterization of cellulose-deficient derivates of shiga toxin-producing Escherichia coli.

scientific article published on June 2010

Serologic detection of experimental Salmonella enteritidis infections in laying hens by fluorescence polarization and enzyme immunoassay

scientific article published in January 2002

Serological detection of experimental Salmonella enteritidis infections in laying hens

scientific article published in July 1990

Serotype-specific and serotype-independent strategies for preharvest control of food-borne Salmonella in poultry

scientific article published on December 2007

Serotyping of Salmonella Enterica Isolated from Mice Caught on US Poultry Farms 1995 through 1998

scientific article published on 30 March 2018

Simple and rapid methods for detecting Salmonella enteritidis in raw eggs

scientific article published in October 2003

Single nucleotide polymorphisms that differentiate two subpopulations of Salmonella enteritidis within phage type

scientific article

Subpopulation characteristics of egg-contaminating Salmonella enterica serovar Enteritidis as defined by the lipopolysaccharide O chain

scientific article

Supplementing pools of egg contents with broth culture media to improve rapid detection of Salmonella enteritidis.

scientific article published in January 1998

The comparative virulence for chicks of Salmonella enteritidis phage type 4 isolates and isolates of phage types commonly found in poultry in the United States

scientific article published in July 1995

The impact of different housing systems on egg safety and quality.

scientific article published in January 2011

The relationship between the duration of fecal shedding and the production of contaminated eggs by laying hens infected with strains of Salmonella enteritidis and Salmonella Heidelberg.

scientific article published in September 2005

The relationship between the magnitude of the specific antibody response to experimental salmonella enteritidis infection in laying hens and their production of contaminated eggs.

scientific article published in April 2001

The relationship between the numbers of Salmonella Enteritidis, Salmonella Heidelberg, or Salmonella Hadar colonizing reproductive tissues of experimentally infected laying hens and deposition inside eggs

scientific article published in June 2011

Understanding Salmonella enteritidis in laying chickens: the contributions of experimental infections

scientific article published on January 1994

Use of a live attenuated Salmonella typhimurium vaccine to protect hens against Salmonella enteritidis infection while undergoing molt

scientific article

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