Studying an outbreak of inclusion body hepatitis in broilers in Nineveh governorate, Iraq

الملخص EN

The aim of this study was to provide field outbreaks data with fADVs in Ninevah governorate to emphasize the importance of the disease due to high mortality and production losses.

a total of 729,500 broilers collected from 64 flocks at 14 different locations in Nineveh governorate during the second half of 2020.

were included in this study.

histopathological changes of the liver in infected birds have been studied.

molecular identification of FADV was accomplished by DNA extraction from liver samples using dneasy tissue kit.

results reviled that there were 51892 mortalities representing 7.11%.

it was noted that the broiler flocks were infected during their 2nd-6th weeks of age, being the highest in the 5th week of age.

decreased mortality was detected from July to December.

being 11.3, 7.91, 7.08, 6.38, 5.94 and 4.95%, respectively.

microscopical examination of the liver manifested the pathognomonic presence of eosinophilic intranuclear inclusion bodies related to the disease.

PCR findings revealed positive results of fadvs.

it could be concluded that the environmental stress and immunosuppressive agents could contribute to the percentage and duration of mortalities in broiler flocks.