Retrospective study on transmissible viral proventriculitis and Chicken proventricular necrosis virus (CPNV) in the UK.

Retrospective study on transmissible viral proventriculitis and Chicken proventricular necrosis virus (CPNV) in the UK. Avian Pathol. 2019 Oct 08;:1-20 Authors: Grau-Roma L, Schock A, Nofrarías M, Ali Wali N, de Fraga AP, Garcia-Rueda C, de Brot S, Majó N Abstract Chicken proventricular necrosis virus (CPNV) is a recently described birnavirus, which has been proposed to be the cause of transmissible viral proventriculitis (TVP). The understanding of the epidemiology of both the virus and the disease is very limited. A retrospective investigation on TVP and CPNV in broiler chicken submissions from the UK from between 1994 and 2015 was performed with the aims of assessing the longitudinal temporal evolution of TVP and CPNV and to review the histological proventricular lesions in the studied chickens. Ninety-nine of the 135 included submissions (73.3%) fulfilled the TVP-diagnostic criteria, while the remaining 36 submissions (26.7%) displayed only lymphocytic proventriculitis (LP). The first detection of CPNV by PCR dated from 2009. Results showed a rise in the number of both TVP and positive CPNV RT-PCR submissions from 2009 with a peak in 2013, suggesting that they may be an emerging or re-emerging disease and pathogen, respectively. Twenty-two out of the 99 submissions displaying TVP lesions (22%) and 4 out of the 36 (11%) ones with LP gave positive CPNV RT-PCR results, further supporting the association between CPNV and TVP and co...
Source: Avian Pathology - Category: Pathology Authors: Tags: Avian Pathol Source Type: research