Journal ArticleDOI
Vaccination against Newcastle disease: An assessment of haemagglutination inhibition titres obtained from field samples.
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This article is published in Veterinary Record.The article was published on 1973-12-01. It has received 44 citations till now. The article focuses on the topics: Newcastle disease.read more
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The Influence of Test Conditions on Newcastle Disease Hemagglutination
TL;DR: Replicate samples of serum from chickens immune to Newcastle disease were titrated to determine the influence of certain test conditions on hemagglutination-inhibition (hi) titers, and shifts in HI titers were only minor with twofold changes in erythrocyte concentration.
Journal ArticleDOI
Improved protection from velogenic Newcastle disease virus challenge following multiple immunizations with plasmid DNA encoding for F and HN genes.
TL;DR: The results suggested that more than two injections with both F and HN encoding plasmid DNA were required to induce higher level of antibodies for protection against velogenic NDV in chickens.
Journal ArticleDOI
The influence of test conditions on Newcastle disease hemagglutination-inhibition titers.
TL;DR: The most marked effect on magnitude of hemagglutination-inhibition (HI) titers was incubation time of twofold serum dilutions in antigen-saline; the average titer increase after incubation of the serum-antigen mixture for 1 hr at 37 C was log2 2.3 (fivefold).
Journal ArticleDOI
Quantitative estimation of Newcastle disease virus antibody levels in chickens and turkeys by ELISA.
TL;DR: A significant positive correlation between ELISA titre and HI titre for chicken and turkey sera was demonstrated, indicating that vaccinal antibody levels were adequate and ELISA proved a better indicator of immune status than HI.
Journal ArticleDOI
Impaired response to killed Newcastle disease vaccine in chicken possessing circulating antibody to chicken anaemia agent.
TL;DR: The significance of chicken anaemia agent as a potential immunosuppressive agent for chickens is discussed with special reference to the control of Newcastle disease in laying and breeding hens.
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