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Studies for preparation of a trivalent inactivated vaccine against newcastle, gumboro and egg drop syndrome [electronic resource].

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Abo-Zaid, Abo-Zaid A

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Language: English Summary language: Arabic Description: p.181-191Other title:

محاولات لتحضير لقاح ثلاثى ضد أمراض النيوكاسل والجمبورو وظاهرة تدنى البيض [Added title page title]

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Beni-Suef veterinary medical journal, 2001 v. 11 (2A) [electronic resource].

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In: Beni-Suef Veterinary Medical Journal 2001.v. 11(2A)Summary: Monovalent inactivated oil vaccines against Newcastle disease (ND), infectious bursal disease (IBD) and egg drop syndrome (EDS) in addition to a trivalent one were prepared and subjected to the quality control tests. Each vaccine was inoculated in one of four chicken groups while a fifth chicken group was kept as non-vaccinated controL. The humoral immunity was weekly detected and evaluated up to 24 weeks post vaccination in all groups. The results of haemagglutination. inhibition (HI) test and serum neutralization test (SNT) revealed that all the used vaccines induced good levels of humoral immunity. Comparing results of monovalent and trivalent use of vaccine indicated that there was no interference between the used viruses in chicken immune response to each virus: So, we recommended use of trivalent vaccine to save time, cost and effort of vaccination as well as avoid repeated vaccination as stress factor.

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Monovalent inactivated oil vaccines against Newcastle disease (ND), infectious bursal disease (IBD) and egg drop syndrome (EDS) in addition to a trivalent one were prepared and subjected to the quality control tests. Each vaccine was inoculated in one of four chicken groups while a fifth chicken group was kept as non-vaccinated controL. The humoral immunity was weekly detected and evaluated up to 24 weeks post vaccination in all groups. The results of haemagglutination. inhibition (HI) test and serum neutralization test (SNT) revealed that all the used vaccines induced good levels of humoral immunity. Comparing results of monovalent and trivalent use of vaccine indicated that there was no interference between the used viruses in chicken immune response to each virus: So, we recommended use of trivalent vaccine to save time, cost and effort of vaccination as well as avoid repeated vaccination as stress factor.

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