Transmissible Viral Proventriculitis Identified in Broiler Breeder and Layer Hens

摘要: SUMMARY. Transmissible viral proventriculitis (TVP) is a recognized cause of production losses in broiler chickens, but previously it has not been reported breeder and commercial layer hens. In this study, TVP was identified hens, 9–20 wk age, based on histopathologic detection characteristic microscopic lesions. Microscopic lesions proventriculi affected hens consisted glandular epithelial necrosis, ductal hyperplasia, replacement epithelium with epithelium, diffuse interstitial lymphoid infiltration. Additionally, chicken proventricular necrosis virus (CPNV), as the etiology detected TVP-affected using reverse transcriptase–polymerase chain reaction procedure. The findings identify potential provide additional evidence for etiologic ...