000			02035nam a2200193Ia 4500
005			20150921151908.0
008			150525s2005 xx 000 0 und d
041			_aeng
082			_a0875,T
100			_aMuhammad Sohail Azhar _97167
110			_cProf.Dr. Muhamamd Akram Muneer _97168
245			_aEffect Of Virginiamycin And Zinc Bacitracin On New Castle Disease Virus Vaccinated Broiler Chicks
260			_c2005
502			_aThe project was designed to study the effects of Virginiamycin and Zinc bacitracin on Newcastle disease virus (NDV) vaccinated broilers. Two hundred broilers were divided into four groups comprising fifty in each. These groups were treated with Virginiamycin (Stafac-500), Zincbacitracin (Albac) and Cyclophosphamide at the dose rate of 20ppm/50kg, 25 gm/50kg and 0.3ml/bird, respectively. Effect of the treatments on weight gain, lymphoid organs and humoral immune response was evaluated. The virginiamycin treated group had higher body weight than the Zinc bacitracin and Cyclophosphamide treated or untreated control groups. Both virginiamycin and Zinc bacitracin treatments did not adversely affect the weights of bursa of Fabricius, spleen, thymus and liver of the birds. Cyclophosphamide treatment of birds in early life induced the bursal atrophy and slight depression in splenic weight gain. As compared to Cyclophosphamide treated and non-medicated control groups, the sera of virginiamycin / Zinc bacitracin treated groups had higher anti-NDV antibody titres at 42 days of age. The post-challenge sera of NDV vaccinated birds fed virginiamycin and Zinc bacitracin also had higher antibody titre as compared to NDV vaccinated Cyclophosphamide treated birds. The NDV vaccinated birds fed on virginiamycin / Zinc bacitracin medicated rations and those on non-medicated rations did not have any significant post-challenge mortality.
650			_aDepartment of Microbiology _94609
700			_aDr. Mansur-ud-Din Ahmad _95677
710			_aFaculty of Veterinary Sciences _94292
942			_cTH
999			_c2603 _d2603