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1 September 2009 Avian Paramyxovirus Serotype 3 Infection in Neopsephotus, Cyanoramphus, and Neophema Species
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Abstract

An outbreak of avian paramyxovirus serotype 3 (APMV-3) infection occurred in a private bird collection consisting mainly of Neophema species. Two Bourke's parrots (Neopsephotus bourkii) and one red-crowned parakeet (Cyanoramphus novaezelandiae) were examined after developing torticollis and circling. The 3 birds were euthanatized and submitted for necropsy. Brain and liver samples from the 3 birds were homogenized and inoculated into the allantoic cavity of 10-day-old embryonated specific-pathogen-free chicken eggs. An APMV-3 isolate replicated but did not induce embryonic mortality after up to 5 consecutive passages. Allantoic fluid from the second passage was used in hemagglutination testing performed on chicken erythrocytes, which resulted in a titer of 64 hemagglutinating units. Avian paramyxovirus serotype 3 was identified in the allantoic fluid, and a reverse transcription polymerase chain reaction verified the isolate as APMV-3/parakeet. An eventual mortality rate of 70% occurred in the Neophema species, but a group of budgerigars (Melopsittacus undulatus) and parrotlets (Forpus species) kept in the same facility showed no clinical signs during the outbreak.

Arne Jung, Christian Grund, Inge Müller, and Silke Rautenschlein "Avian Paramyxovirus Serotype 3 Infection in Neopsephotus, Cyanoramphus, and Neophema Species," Journal of Avian Medicine and Surgery 23(3), (1 September 2009). https://doi.org/10.1647/2008-022.1
Published: 1 September 2009
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