C. S. Eidson
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View article: Performance of Broiler Progeny of Breeder Flocks Vaccinated with Inactivated Oil Emulsion Malabsorption Syndrome Virus Vaccine
Performance of Broiler Progeny of Breeder Flocks Vaccinated with Inactivated Oil Emulsion Malabsorption Syndrome Virus Vaccine Open
Broiler breeder pullets were vaccinated at 20 to 24 weeks of age with an inactivated, oil emulsion vaccine containing the CO8 strain of avian reovirus. The vaccination induced a high and uniform antibody response that peaked 4 to 5 months …
View article: Vaccination Against Marek's Disease and Infectious Bursal Disease III. Growth Rate of Both Turkey Herpesvirus and Infectious Bursal Disease Virus in Coinfected Cell Cultures
Vaccination Against Marek's Disease and Infectious Bursal Disease III. Growth Rate of Both Turkey Herpesvirus and Infectious Bursal Disease Virus in Coinfected Cell Cultures Open
Titers of the turkey herpesvirus (HVT) and infectious bursal disease virus (IBDV) in coinfected cell cultures, used to produce a live bivalent HVT/IBDV vaccine, were determined daily. Based on the daily titers, cells harvested either 2 or …
View article: Simultaneous Application of Live Turkey Herpesvirus and Infectious Bursal Disease Vaccines Against Marek's Disease and Infectious Bursal Disease
Simultaneous Application of Live Turkey Herpesvirus and Infectious Bursal Disease Vaccines Against Marek's Disease and Infectious Bursal Disease Open
The efficacy of cell-associated (CA) and cell-free (CF) infectious bursal disease (IBD) vaccines in maternal antibody (MAb)-bearing broiler chickens was compared. Compatibility and potency of a mixed vaccine combining live CA turkey herpes…
View article: Vaccination Against Marek's Disease and Infectious Bursal Disease
Vaccination Against Marek's Disease and Infectious Bursal Disease Open
The bivalent HVT/IBDV live vaccine, developed by cocultivation of the turkey herpesvirus (HVT) and infectious bursal disease virus (IBDV) vaccine in cell cultures, was quantitated. The titer of each constituent virus could be successfully …
View article: Vaccination Against Marek's Disease and Infectious Bursal Disease
Vaccination Against Marek's Disease and Infectious Bursal Disease Open
Vaccine viruses of Marek's disease (MD), the FC-126 strain of the herpesvirus of turkeys (HVT), and infectious bursal disease (IBD), the Bursa-Vac-M strain of IBD virus (IBDV), were propagated in the same chicken embryo fibroblast (CEF) mo…
View article: Multivalent Inactivated Virus Oil Emulsion Vaccines in Broiler Breeder Chickens
Multivalent Inactivated Virus Oil Emulsion Vaccines in Broiler Breeder Chickens Open
Inactivated Newcastle disease virus (NDV) and infectious bursal disease virus (IBDV) were incorporated into water-in-oil emulsion vaccines alone or as a bivalent vaccine. Twenty-week-old broiler breeder chickens that had received previous …
View article: Multivalent Inactivated Virus Oil Emulsion Vaccines in Broiler Breeder Chickens
Multivalent Inactivated Virus Oil Emulsion Vaccines in Broiler Breeder Chickens Open
Inactivated Newcastle disease (NDV), infectious bursal disease (IBDV), and viral arthritis/tenosynovitis (VA) viruses were incorporated into water-in-oil emulsion vaccines either alone, in bivalent combinations, or in a trivalent vaccine. …
View article: Multivalent Inactivated Virus Oil Emulsion Vaccines in Broiler Breeder Chickens
Multivalent Inactivated Virus Oil Emulsion Vaccines in Broiler Breeder Chickens Open
Inactivated Newcastle disease (NDV), infectious bursal disease (IBDV), and viral arthritis/tenosynovitis (VA) viruses were incorporated into water-in-oil emulsion vaccines, either alone, in bivalent combinations, or in a trivalent vaccine.…
View article: Simultaneous Vaccination of One-Day-Old Broiler Chickens with Tenosynovitis Virus and Turkey Herpesvirus
Simultaneous Vaccination of One-Day-Old Broiler Chickens with Tenosynovitis Virus and Turkey Herpesvirus Open
An attenuated tenosynovitis virus vaccine and turkey herpesvirus (HVT) vaccine mixed prior to vaccination were injected subcutaneously into one-day-old chicks. In laboratory and field trials there did not appear to be any interference, bec…
View article: Vaccination of Broiler Chicks from Breeder Flocks Immunized with a Live or Inactivated Oil Emulsion Newcastle Disease Vaccine ,
Vaccination of Broiler Chicks from Breeder Flocks Immunized with a Live or Inactivated Oil Emulsion Newcastle Disease Vaccine , Open
One-day-old chicks used in this study were from breeder flocks vaccinated with live (B1 and LaSota) or inactivated oil emulsion Newcastle disease (ND) vaccine. Chicks were vaccinated against ND by various procedures. The vaccination respon…
View article: Further Studies with an Inactivated Oil Emulsion Newcastle Disease Vaccine in Broiler Breeders
Further Studies with an Inactivated Oil Emulsion Newcastle Disease Vaccine in Broiler Breeders Open
Chickens vaccinated with a live Newcastle disease (ND) vaccine and subsequently revaccinated with an inactivated oil emulsion ND vaccine had higher and more persistent hemagglutination-inhibition (HI) antibody titers than birds vaccinated …
View article: Serological Responses to Mycoplasma synoviae in Chickens Infected with Virulent or Avirulent Strains of Marek's Disease Virus
Serological Responses to Mycoplasma synoviae in Chickens Infected with Virulent or Avirulent Strains of Marek's Disease Virus Open
The pathogenicity and immunosuppressive capability of five strains of Marek's disease herpesvirus (MDHV) was examined. Three of the strains (ALA, MISS, NCS) were isolated from flocks experiencing vaccine breaks while the other two strains …
View article: Reduced Vaccinal Protection of Turkey Herpesvirus Against Field Strains of Marek's Disease Herpesvirus ,
Reduced Vaccinal Protection of Turkey Herpesvirus Against Field Strains of Marek's Disease Herpesvirus , Open
Four isolates of Marek's disease herpesvirus (MDV) were obtained from 21-week-old broiler breeders with lesions and mortality from Marek's disease (MD). They had been properly vaccinated with turkey herpesvirus (HVT). The isolates were des…
View article: Comparison of Inactivated and Live Infectious Bursal Disease Virus Vaccines in White Leghorn Breeder Flock
Comparison of Inactivated and Live Infectious Bursal Disease Virus Vaccines in White Leghorn Breeder Flock Open
Leghorn breeder chickens, which had received live infectious bursal disease (IBDV) virus vaccine at 12 weeks of age and had been injected subcutaneously at 20 weeks of age with an inactivated IBDV oil emulsion vaccine, produced very high a…
View article: Vaccination of Chickens with a Clone-Selected Lastoa Strain of Newcastle Disease Virus ,
Vaccination of Chickens with a Clone-Selected Lastoa Strain of Newcastle Disease Virus , Open
A cone-selected Lasota strain of Newcastle disease (ND) was found to be more immunogenic than the B1 strain but less immunogenic than the regular Lasota strain while having the same pathogenic index as the B1 strain. The geometric mean hem…
View article: Field Trials with an Oil Emulsion Newcastle Disease Vaccine in Broiler Breeders ,
Field Trials with an Oil Emulsion Newcastle Disease Vaccine in Broiler Breeders , Open
Chickens vaccinated with live Newcastle disease (ND) vaccine and subsequently revaccinated with an inactivated oil emulsion vaccine had high and persistent hemagglutination-inhibition (HI) antibody titers for at least 40 weeks. The geometr…
View article: Vaccination against Marek’s Disease with Cell-Free Herpesvirus of Turkeys by Aerosol Vaccination ,
Vaccination against Marek’s Disease with Cell-Free Herpesvirus of Turkeys by Aerosol Vaccination , Open
Aerosals of turkey herpesvirus (HVT) were studied as a potential means for mass vaccination of poultry against Marek’s disease (MD). Chickens sprayed with HVT vaccine were examined for immunofluorescent antigen with the direct fluorescent …
View article: Vaccination of Broiler Breeders with a Tenosynovitis Virus Vaccine ,
Vaccination of Broiler Breeders with a Tenosynovitis Virus Vaccine , Open
An attenuated tenosynovitis virus was applied via the water to broiler breeders between 10 and 15 weeks of age to vaccinate against virulent tenosynovitis virus. Six flocks were vaccinated while two flocks served as unvaccinated controls. …
View article: Local antibody response in chickens: analysis of antibody synthesis to Newcastle disease virus by solid-phase radioimmunoassay and immunofluorescence with class-specific antibody for chicken immunoglobulins
Local antibody response in chickens: analysis of antibody synthesis to Newcastle disease virus by solid-phase radioimmunoassay and immunofluorescence with class-specific antibody for chicken immunoglobulins Open
The antibody response to Newcastle disease virus was monitored in the sera and salivas of adult chickens immunized by two methods: (i) combined intratracheal-intranasal vaccination followed by intratracheal revaccination or (ii) intramuscu…
View article: In Vivo and In Vitro Studies on the Effect of Gentamicin Sulfate on the Efficacy of the Turkey Herpesvirus Vaccine
In Vivo and In Vitro Studies on the Effect of Gentamicin Sulfate on the Efficacy of the Turkey Herpesvirus Vaccine Open
In vitro studies indicate that the titer of the cell-free or cell-associated turkey herpevirus (HVT) vaccine was not appreciably reduced when incubated with .1, .2, or .3 mg of gentamicin sulfate for up to 2 hr. However, the titer of both …
View article: Effect of bursectomy and depletion of immunoglobulin A on antibody production and resistance to respiratory challenge after local or systemic vaccination of chickens with Newcastle disease virus
Effect of bursectomy and depletion of immunoglobulin A on antibody production and resistance to respiratory challenge after local or systemic vaccination of chickens with Newcastle disease virus Open
Surgical removal of the bursa of Fabricius from newly hatched chicks resulted in a depletion of immunoglobulin A (IgA) from serum and bile of 55 and 67% of the birds, respectively, up to 11 weeks of age. The occurrence of IgG and IgM in se…
View article: Factors influencing the appearance of antibody in tracheal washes and serum of young chickens after exposure to Newcastle disease virus
Factors influencing the appearance of antibody in tracheal washes and serum of young chickens after exposure to Newcastle disease virus Open
The development of plaque-neutralizing antibody in tracheal washes and hemagglutination inhibition antibody in serum was followed after intratracheal and intranasal or intramuscular inoculation of 1-, 14-, or 28-day-old chicks with a lento…
View article: Application of the Cell-Free Turkey Herpesvirus Vaccine by the Aerosol Route for the Prevention of Marek’s Disease in Chickens
Application of the Cell-Free Turkey Herpesvirus Vaccine by the Aerosol Route for the Prevention of Marek’s Disease in Chickens Open
In field trials approximately 300,000 birds were vaccinated against Marek's disease (MD) by aerosol spray with 1,000 to 5,000 PFU of cell-free HVT vaccine per chick. Chicks were sprayed in the trays of the hatchers which still contained du…
View article: Effect of Infectious Bursal Disease Virus on the Immunological Responsiveness of the Chicken
Effect of Infectious Bursal Disease Virus on the Immunological Responsiveness of the Chicken Open
The immunological response of chickens infected at 28 days of age with infectious bursal disease virus (IBDV) was examined. Cellular immunity was studied by the graft-versus-host reaction and delayed type hypersensitivity skin reactions to…
View article: Effect of Infectious Bursal Disease on the Response of Chickens to Mycoplasma synoviae, Newcastle Disease Virus, and Infectious Bronchitis Virus
Effect of Infectious Bursal Disease on the Response of Chickens to Mycoplasma synoviae, Newcastle Disease Virus, and Infectious Bronchitis Virus Open
SUMMARY At 35 days of age, chickens which as 1-day-old chicks were inoculated with the infectious bursal disease virus ( ibdv ) had significantly lower antibody titers against Mycoplasma synoviae , Newcastle disease virus, and infectious b…
View article: Comparison of the Efficacy and Transmissibility of Conventional NDV Vaccines and Vaccines Prepared After Back-Passage Through Chickens
Comparison of the Efficacy and Transmissibility of Conventional NDV Vaccines and Vaccines Prepared After Back-Passage Through Chickens Open
In laboratory trials B1 and Lasota stains of Newcastle disease virus (NDV) back-passaged in chickens were found to have a greater spreading potential than presently available B1 and Lasota vaccines. Although the regular B1 and Lasota strai…
View article: Effect of Infectious Bursal Disease on the Severity of Eimeria tenella Infections in Broiler Chicks
Effect of Infectious Bursal Disease on the Severity of Eimeria tenella Infections in Broiler Chicks Open
A study was initiated to determine whether prior exposure to infectious bursal disease virus (IBDV) influenced the susceptibility of young broiler chicks to Eimeria tentella infections. When one-day-old chicks infected with IBDV were subse…
View article: Long Term Studies Comparing the Efficacy of Cell-Free Versus Cell-Associated HVT Vaccines Against Marek’s Disease
Long Term Studies Comparing the Efficacy of Cell-Free Versus Cell-Associated HVT Vaccines Against Marek’s Disease Open
In long-term field trials lasting approximately 12 months attempts were made to determine whether the cell-free HVT vaccine was as effective in reducing MD losses as the cell-associated HVT vaccine. Four trials were conducted in which floc…
View article: A Comparison of Various Routes of Newcastle Disease Vaccination at One Day of Age
A Comparison of Various Routes of Newcastle Disease Vaccination at One Day of Age Open
Groups of 100 one-day-old chicks with moderate levels of maternal antibody were vaccinated with the B1 strain of Newcastle disease virus subcutaneously, intratracheally, intraocularly or by aerosol or were left unvaccinated. Certain of the…
View article: Efficacy of Intratracheal Administration of Newcastle Disease Vaccine in Day-Old Chicks
Efficacy of Intratracheal Administration of Newcastle Disease Vaccine in Day-Old Chicks Open
Groups of day-old chicks with varying levels of parental antibody were vaccinated against Newcastle disease (B1 strain) with a commercially available device which simultaneously debeaks the chick and emits a fine spray of vaccine into its …