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).
ZOUELFAKAR, S., ALY, M., AFIFI, M., HASSAN, M., & SAAD, F. (1997). EVALUATION ” OF TWO VACCANATION PROGRAMS TO CONTROL INFECTIOUS BURSAL DISEASE IN COMMERCIAL BROILERS. Veterinary Medical Journal (Giza), 45(4), 531-540. doi: 10.21608/vmjg.1997.378379
MLA
SAHAR ZOUELFAKAR; MONA ALY; MANAL AFIFI; M HASSAN; F SAAD. "EVALUATION ” OF TWO VACCANATION PROGRAMS TO CONTROL INFECTIOUS BURSAL DISEASE IN COMMERCIAL BROILERS", Veterinary Medical Journal (Giza), 45, 4, 1997, 531-540. doi: 10.21608/vmjg.1997.378379
HARVARD
ZOUELFAKAR, S., ALY, M., AFIFI, M., HASSAN, M., SAAD, F. (1997). 'EVALUATION ” OF TWO VACCANATION PROGRAMS TO CONTROL INFECTIOUS BURSAL DISEASE IN COMMERCIAL BROILERS', Veterinary Medical Journal (Giza), 45(4), pp. 531-540. doi: 10.21608/vmjg.1997.378379
VANCOUVER
ZOUELFAKAR, S., ALY, M., AFIFI, M., HASSAN, M., SAAD, F. EVALUATION ” OF TWO VACCANATION PROGRAMS TO CONTROL INFECTIOUS BURSAL DISEASE IN COMMERCIAL BROILERS. Veterinary Medical Journal (Giza), 1997; 45(4): 531-540. doi: 10.21608/vmjg.1997.378379
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