Nachweis eines neuen Herpesvirus bei einem ungewöhnlichen Fall von Pachecoscher Krankheit bei Amazonen und Graupapageien

Abstract

Isolation of a new herpesvirus from a n unusual case of Pacheco's parrot disease in amazones and grey parrots A virus was isolated from diseased and dead amazones and grey parrots in a privat aviary. The virus was identified as a herpesvirus on the basis of its physico-chemical properties and its morphology. Clinical signs and gross pathology of affected birds were different from typical cases of Pacheco's parrot disease. As shown in cross neutralisation tests the described virus does not possess antigenic relationship to the Pacheco's parrot disease herpesvirus and to other avian herpes viruses.

Mortality in psittacine birds resembling Pacheco's disease in Spain

“…This may be the result of the aetiological agent being excreted through the urinary as well as the digestive tract (Petrak, 1982). The occurrence of basophilic IIBs (in cell cultures) and the isolation of the virus in the kidney have been reported from one case of Pacheco's disease induced by a new isolate of herpesvirus (Krautwald et al, 1988).…”

“…Whilst it has since been reported worldwide, it has rarely been reported in Europe-one outbreak in the United Kingdom (Randall et al, 1979), another in Czechoslovakia (Persin & Bratrsovsky, 1986), two in the Netherlands (Westerhof et al, 1988) and one in Germany (Krautwald, 1988). …”

Detection and Heterogeneity of Herpesviruses Causing Pacheco's Disease in Parrots

“…Gross necropsy findings of PD have been variable and nonspecific (3,5,7,15,24,30,35,40,41). Microscopically, PD has been characterized by moderate to marked, acute hepatic necrosis with minimal associated inflammation and the presence of intranuclear inclusion bodies.…”

“…Although described in 1929, PD was not recognized again until the early 1970s in flocks of captive parrots in Florida (40,41). Subsequently, this disease has been reported from multiple locations within the United States (5,6,15,20,26,27,30,35,39) and from around the world, in countries where Central and South American parrots have been imported (3,7,13,14,21,23,24,25).…”

“…The abundance of inclusion bodies, however, has varied from parrot to parrot, and in some cases the inclusion bodies were either rare or absent entirely. Splenic necrosis, enteritis, pancreatitis, tracheitis, and air sacculitis have been variable features of PD (3,5,7,15,24,30,35,40,41). Additional assays that have been used to confirm the diagnosis of PD have included immunocytochemical staining of impression smears (15) and paraffin-embedded sections (33), electron microscopy of negatively stained supernatants of crushed tissues, and virus isolation (6, 15-18, 26, 30).…”