A COMPARATIVE STUDY OF VACCINATION AGAINST MAREK'S DISEASE OF POULTRY | ||||
| Assiut Veterinary Medical Journal | ||||
| Article 30, Volume 22.1, Issue 43, September 1989, Page 190-195 PDF (1.76 MB) | ||||
| Document Type: Research article | ||||
| DOI: 10.21608/avmj.1989.188706 | ||||
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| Authors | ||||
| V.D.P. RAO; S.K. GARG; RAJESH CHANDRA | ||||
| Abstract | ||||
| Amarek's disease virus (MDV) strain isolated locally from an apparently healthy bird was attenuated in chicken embryo fibroblast cell culture. The virus at its 20th passage level was used as a vaccine and the protect ion offered was compared with MD attenuated vaccine (Poultry Biologic als) and Herpes virus of turkey (HVT) F or strain. All the 3 vaccines showed significant protection against challenge with the classical strain of MDV. The degree of protection was highest in MD attenuated (Poultry Biologicals) strain i.e. 95% followed by HVT vaccine (92%) and local isolate of MD attenuated vaccine (87.5%). The vaccinated as well as vaccinated challenged birds showed gain in body weight comparable to controls. The virus reisolation was less in the vaccinated challenged birds. | ||||
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