PREPARATION AND FIELD APPLICATION OF INACTIVATED TRIVALENT VACCINE AGAINST NEWCASTLE INFECTIOUS BRONCHITIS AND EGG DROP SYNDROME DISEASES | ||
| Veterinary Medical Journal (Giza) | ||
| Volume 53, Issue 3, July 2005, Pages 809-817 PDF (2.82 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/vmjg.2005.385402 | ||
| Authors | ||
| Nancy Rofail* ; Suzan Tolba; Eman Hassan; Nadia Ibrahim; Fekria El-Bourdiny | ||
| Veterinary Serum and Vaccine Research Institute, Abbasia, Cairo | ||
| Abstract | ||
| A trivalent vaccine against Newcastle disease virus (NDV), egg drop syndrome virus (EDS) and infectious bronchitis virus (IBV) were prepared and tested for potency, safety and sterility. Ten thousands, 120 day old broiler breeder chickens were divided into two equal groups; the first group was vaccinated by the trivalent prepared vaccine and compared by the second group which was vaccinated by each of monovalent ND, IB and EDS oil emulsion vaccines. The results of the trivalent vaccine showed no noticeable differences in immune response as well as egg production in both groups. The trivalent vaccine saves the costs and effort than the vaccination with monovalent vaccines. | ||
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