HOST SPECIFIC CROSS PROTECTION USING PASTEURELLA MULTOCIDA BACTERIN PREPARED FROM IN-VIVO PROPAGATED STRAIN | ||
| Assiut Veterinary Medical Journal | ||
| Article 11, Volume 39.2, Issue 78, July 1998, Pages 145-156 PDF (2.91 M) | ||
| Document Type: Research article | ||
| DOI: 10.21608/avmj.1998.183202 | ||
| Authors | ||
| Hassan Abd El-Maksoud Hassan; Hala Ahmed Fadl; Wafaa Aly Ghoniemy | ||
| Veterinary Serum and Vaccine Research Institute, Abbasia, Cairo | ||
| Abstract | ||
| Fowl cholera bacterin prepared from liver of chicken infected with strain 5:A induced satisfactory cross-protection in chickens against challenge exposures to either homologous strain (5:A) or heterologous strains of P. multocida belonged to the same capsular serogroup A (8:A and 9:A). A bacterin prepared from bacteria grown on laboratory media induced only homologous protection against challenge with the vaccinal strain (5:A). It appeared that the cross-protecting factors expressed in-vivo grown P. multocida were host specific. This was evident as the chicken tissue bacterin induced only a homologous protection in mice whereas mouse tissue bacterin induced both homologous and heterologous protection in mice. | ||
| Keywords | ||
| Key words: Host specific; Cross protection; P.multocida; bacterin | ||
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