EVALUATION ” OF TWO VACCANATION PROGRAMS TO CONTROL INFECTIOUS BURSAL DISEASE IN COMMERCIAL BROILERS | ||
| Veterinary Medical Journal (Giza) | ||
| Volume 45, Issue 4, October 1997, Pages 531-540 PDF (5.17 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/vmjg.1997.378379 | ||
| Authors | ||
| SAHAR ZOUELFAKAR1; MONA ALY2; MANAL AFIFI3; M HASSAN2; F SAAD1 | ||
| 1DEPT. of poultry disease, faculty of veterinary medicine Cairo University | ||
| 2Animal Health Research institute, Dokki Giza | ||
| 3Dept. of poultry disease, faculty of VET, Med. Cairo Uni. | ||
| Abstract | ||
| Experimental study was carried out t0 compre protection induced by two infections bursal disease (IBD) vaccination programs is Commercial broilers. chicken inoculated with live vaccine at 7 and s21v days old were protected against mortality but clinical signs of IBD were noted after challenge at 28 and 35 days old. Chickens inoculated with both live vaccine (at 7 & 21 days old) and inactivated vaccine (at 8 days old) were better protected against challenge at 28 and 35 days of age. This vaccination program protected challenged chickens against both mortality and clinical IBD signs. However, the bursa: body Weight ratios were lower than those of the control birds (P<0.05). | ||
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