STUDIES ON E. coli IN POULTRY II- PREPARATION AND EVALUATION OF DIFFERENT TYPES OF VACCINES | ||||
| Assiut Veterinary Medical Journal | ||||
| Article 8, Volume 21.1, Issue 41, January 1989, Page 55-60 PDF (1.38 MB) | ||||
| Document Type: Research article | ||||
| DOI: 10.21608/avmj.1989.188195 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| E.K. NAFIE; M. EL-REHAWY; A.A. IBRAHIM; S. MOUSA; S. KAMEL; BAHY EL-GAMAL | ||||
| Abstract | ||||
| A polyvalent vaccine was prepared from 078: K 80 (B-), 0125: K 70 (B15) and 080: K 61 (B7) and divided into two parts, the first was heat-inactivated and the second was a formalinized 2ed vaccine. The vaccinal dose was one ml. adminsitered either by oral or intramnscular route for both types of vaccine. The birds challenged, 15-days after the administration of the second vaccinal dose, either by homologous or heterologous strains. E. coli aglutinating antibodies were detected in the serum of birds with a titres up to 480 following heat inactivated vaccine and up to 320 following formalinized one. The serum of test group showed a higher titres of antibodies up to 800 following challenge, while no change accurred after herologous challenge. | ||||
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