IMMUNE RESPONSE OF BUFFALO-CALVES TO INACTIVATED COMBINED VACCINE UNDER FIELD CONDITIONS | ||
| Egyptian Journal of Agricultural Research | ||
| Article 24, Volume 74, Issue 1, March 1996, Pages 265-275 PDF (3.19 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.1996.427370 | ||
| Authors | ||
| HUSSIEN M. GHALY; MAGDY M. EL-SABBAGH; SAMIRA SAEED | ||
| Veterinary Serum and Vaccine Research Institute, Agricultural Research Centre, Giza, Egypt | ||
| Abstract | ||
| Fourteen buffalo-calves each was vaccinated twice within 2 weeks interval with 3 ml of the reconstituted inactivated combined vaccine. The vaccinated calves were kept for 6 months in a natural setting with five non-vaccinated control calves. All vaccinated calves remained clinically normal during the observation period, 3 control calves developed symptoms of respiratory disorders and PI - 3 virus was isolated from the nasal discharge of only 2 control animals. IBR virus was isolated at 45 days post-vaccination from the third one, and showed titer of 122 after 2 months, while BVD virus was not isolated from any calf. Results of the SN test against IBR, BVD and PI - 3 antigens indicated that, efficacy of vaccine and the calves should be revaccinated each 6 months from vaccination. | ||
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