Identification of Transmissible Viral Proventriculitis (TVP) in broiler chickens in Poland

2017 ◽  
Vol 20 (2) ◽  
pp. 417-420 ◽  
Author(s):  
M. Śmiałek ◽  
M. Gesek ◽  
A. Śmiałek ◽  
A. Koncicki
Keyword(s):  
Body Weight ◽  
Eastern Europe ◽  
Broiler Chickens ◽  
Central And Eastern Europe ◽  
Histopathological Examination ◽  
Lymphocytic Infiltration ◽  
Glandular Epithelium ◽  
Vacuolar Degeneration ◽  
Ductal Epithelium

Abstract The aim of the study was to investigate the possibility of Transmissible Viral Proventriculitis (TVP) occurrence in broiler chickens in Poland. In march 2016 proventriculi samples were collected from broiler chickens showing poor uniformity and decreased body weight, accompanied by enlarged proventriculi. Histopathological examination of affected proventriculi revealed typical lesions associated with TVP (vacuolar degeneration and necrosis of glandular epithelium, replacement of glandular epithelium by hyperplastic ductal epithelium and moderate to severe lymphocytic infiltration). To our best knowledge, up to date there is no report indicating the presence of TVP in Poland nor in Central and Eastern Europe.

scholarly journals First description of histopathological lesions associated with a fatal infection of moose (Alces alces) with the liver fluke Parafasciolopsis fasciolaemorpha Ejsmont, 1932

2019 ◽  
Vol 63 (4) ◽  
pp. 549-554
Author(s):  
Katarzyna Filip-Hutsch ◽  
Tomasz Hutsch ◽  
Szymon Kolasa ◽  
Aleksander W. Demiaszkiewicz
Keyword(s):  
Liver Fibrosis ◽  
Connective Tissue ◽  
Eastern Europe ◽  
National Park ◽  
Liver Fluke ◽  
Central And Eastern Europe ◽  
Histopathological Examination ◽  
Liver Parenchyma ◽  
Histopathological Changes ◽  
Incomplete Septal Cirrhosis

Abstract Introduction Parafasciolopsis fasciolaemorpha is a liver fluke typically parasitising moose in Central and Eastern Europe. The aim of our studies was to describe a case of fatal moose parafasciolopsosis, with special emphasis on the histopathological changes caused in the liver tissue by around 10,000 flukes. Material and Methods A male moose, found dead in Polesie National Park, eastern Poland, was subjected to parasitological necropsy. Macroscopic and histopathological examination of the liver was performed. Results Over 10,000 flukes identified as P. fasciolaemorpha were isolated from the liver parenchyma. Histopathological examination of the liver revealed the presence of multiple cavities, which were filled with flukes and cellular detritus and encysted with a layered capsule of connective tissue. Extensive liver fibrosis with signs of incomplete septal cirrhosis was also observed. Conclusion Parafasciolopsosis with accompanying diarrhoea was the most probable reason for the moose’s death. However, it is possible that most moose are able to survive extremely intensive P. fasciolaemorpha infection by formation of extensive fibrosis, which isolates flukes from the liver parenchyma and therefore retards the failure of the organ. To the best of our knowledge, this is the first histopathological description of changes in the liver of a moose infected with P. fasciolaemorpha.

Chicken proventricular necrosis virus related transmissible viral proventriculitis in broiler chickens in Poland

2020 ◽  
Author(s):  
Marcin Śmiałek ◽  
Michał Gesek ◽  
Daria Dziwulska ◽  
Jowita Samanta-Niczyporuk ◽  
Andrzej Koncicki
Keyword(s):  
Body Weight ◽  
Broiler Chickens ◽  
Histopathological Examination ◽  
Cross Reactivity ◽  
Control Group ◽  
Feed Conversion ◽  
Necrosis Virus ◽  
Group A ◽  
Potential Factor ◽  
Antibody Levels

Abstract Background. Transmissible viral proventriculitis (TVP) is an infectious disease reported in all production types of chickens. TVP is manifested in decreased body weight gains, wide weight diversity of birds in the flock and poor feed conversion. Histopathological examination seems to be the most reliable method for confirming the disease. Although TVP etiology has not been explicitly defined, a novel virus identified as a member of the Birnaviridae family, named chicken proventricular necrosis virus (CPNV) has been isolated from clinical cases of TVP and it is now considered as a potential factor of a disease. The study was undertaken in order to reproduce the disease under laboratory conditions and to evaluate the etiology of first described Polish case of TVP. Results. Anatomopathological and histopathological evaluation reveled that we've succeeded to reproduce TVP in broiler chickens. Within 14 days after infection birds gained approximately 30,38% less body weight in comparison to Control group. In TVP infected group a seroconversion against FAdV and IBDV was recorded 14 days post infection (dpi). 14 dpi CPNV was detected in proventriculi, while FAdV in spleens and livers of infected birds. Conclusions. We have demonstrated that CPNV was involved in the development of the disease. We did not record the presence of IBDV in the TVP or control birds, despite our recording a strong seroconversion against IBDV in the birds from the TVP group. CPNV belongs to the same family as IBDV, which allows us to assume serological cross-reactivity between them. This possibility of CPNV infections affecting IBDV antibody levels detected by commonly available ELISAs should be taken into account under poultry field conditions and diagnosis. The role of FAdV in the development of TVP needs further evaluation.

Local Governance in Central and Eastern Europe

2008 ◽  
Author(s):  
Tomila V. Lankina ◽  
Anneke Hudalla ◽  
Hellmut Wollmann
Keyword(s):  
Eastern Europe ◽  
Central And Eastern Europe ◽  
Local Governance

Merger regulation in Central and Eastern Europe: Evidence from Hungary, Romania and Slovenia

2002 ◽  
Vol 52 (3) ◽  
pp. 327-345 ◽  
Author(s):  
T. Kravtseniouk
Keyword(s):  
Eastern Europe ◽  
Central And Eastern Europe ◽  
Merger Control ◽  
Substantial Part ◽  
Economic Competition ◽  
Close Link ◽  
Case Study Methodology ◽  
Domestic Markets ◽  
Study Methodology

This paper shows the principal features of merger control in selected transition economies of Central and Eastern Europe (CEE), namely Hungary, Romania and Slovenia, by applying case study methodology. The presented findings are based on the analysis of Hungarian, Romanian and Slovenian competition law and merger rulings reached by the Competition Offices of these countries. A substantial part of the conclusions is drawn from a sample of 42 merger applications processed by the Office of Economic Competition of Hungary between 1994 and 2000. The results of empirical analysis demonstrate the considerable flexibility of merger control in the studied countries, its orientation towards the future of domestic markets and a close link with industrial policy. The paper also highlights the areas of interdependence of competition policy and transition and argues that merger control in the studied CEE countries may be regarded as currently adequate to the requirements imposed by transition.

Sign in / Sign up

Export Citation Format

Share Document