Abstract
Infectious bursal disease is one of the most important health
hazards being faces by the Poultry industry of Pakistan. The study was
designed to record the prevalence of bursal disease in broiler and layer
flock in and around Lahore District of Pakistan during the one year
period. A total of 365 broiler flocks, 64 broiler flocks were affected with
Infectious bursal Disease. The prevalence of disease was found to be
17.53% in broiler flocks. Out of 246 layer flocks 32 layer flocks were
affected Infectious bursal Disease. The % prevalence of disease was
found to be 13.00 % in layer flocks the disease was recorded throughout
the year; however, the occurrence was more in winter season followed by rainy, summer and spring seasons. The susceptibility of the birds was the highest during the age of 3 to 4 weeks in both broilers (18.8%) and layers (20%) after which decrease was noticed. During present study the necropsy findings indicated hemorrhages on bursa (20.05%), thigh
(18.85%) breast muscles (11%), bursal hypertrophy (61%), nephritis
(89%) and necrotic liver (4.1%).
GHULAM MURTAZA, MUHAMMAD AKHTAR , ABDUL QAYYUM NAYYER. (2002) EPIDEMIOLOGY OF INFECTIOUS BURSAL DISEASE IN BROILER AND LAYER FLOCKS IN AND AROUND LAHORE, PAKISTAN, Punjab University Journal of Zoology, Volume 17, Issue.
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