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Influence of the use of homologous and heterologous newcastle disease virus strains in the haemagglutination inhibition assay on sera of spf chickens vaccinated with different inactivated newcastle disease vaccinesa [electronic resource].

By:

Mahmoud, Ekram Salama

Contributor(s):

EI-Makaky, Hala Mohamed

Language: English Summary language: Arabic Description: p.178-183Other title:

تأثير استخدام العترات المماثلة والمختلفة لفيروس مرض النيوكاسل في قياس الاجسام المناعية المانعة للتلازن الدموي في أمصال الدجاج المحصن بمختلف لقاحات مرض النيوكاسل المثبطة [Added title page title]

Uniform titles:

Zagazig veterinary journal, 2010 v. 38 (3) [electronic resource].

Subject(s):

Online resources:

Full Text Article.

In: Zagazig Veterinary Journal 2010.v.38(3)Summary: In this study, the influence of different strains of Newcastle disease virus (NDV) (LaSota, Clone 30 and Hitchner B "HBI ") was evaluated as homologous and heterologous antigens in the haemagglutination inhibition assay HI for the measurement of antibody titre after vaccination of chickens with different inac,tivated NDV strains. The mean value of HI test revealed that the use of LaSota strain as an antigen in HI assay after vaccination with inactivated LaSota vaccine gave significantly higher titre than Hitchner BI or Clone 30 when used as antigen in HI assay. The result after vaccination with Clone 30 revealed that HI titres were significantly higher when Clone 30 was used as an antigen in HI assay in comparison to LaSota or HBI when used as antigens in HI assay. In case of vaccination with Ulster strain the HI titres were higher when LaSota was used as antigen in comparison to Clone 30 on HBI as an antigen in HI assay. It was found that vaccination with HBI vaccine gave higher HI titre in HI assay on using HB I as an antigen. The results of this study indicate that the NDV strains used in HI assay can have a considerable influence on the antibody titres that are detected, where the homologous antigens in HI assay levealed significantly higher titres comparing with those obtained by heterologous antigens.

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In this study, the influence of different strains of Newcastle disease virus (NDV) (LaSota, Clone 30 and Hitchner B "HBI ") was evaluated as homologous and heterologous antigens in the haemagglutination inhibition assay HI for the measurement of antibody titre after vaccination of chickens with different inac,tivated NDV strains. The mean value of HI test revealed that the use of LaSota strain as an antigen in HI assay after vaccination with inactivated LaSota vaccine gave significantly higher titre than Hitchner BI or Clone 30 when used as antigen in HI assay. The result after vaccination with Clone 30 revealed that HI titres were significantly higher when Clone 30 was used as an antigen in HI assay in comparison to LaSota or HBI when used as antigens in HI assay. In case of vaccination with Ulster strain the HI titres were higher when LaSota was used as antigen in comparison to Clone 30 on HBI as an antigen in HI assay. It was found that vaccination with HBI vaccine gave higher HI titre in HI assay on using HB I as an antigen. The results of this study indicate that the NDV strains used in HI assay can have a considerable influence on the antibody titres that are detected, where the homologous antigens in HI assay levealed significantly higher titres comparing with those obtained by heterologous antigens.

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