Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/21264
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dc.contributor.authorGerber, Priscilla Freitasen
dc.contributor.authorTrampel, Darrell Wen
dc.contributor.authorOpriessnig, Tanjaen
dc.date.accessioned2017-06-06T09:21:00Z
dc.date.issued2014en
dc.identifier.citationAvian Pathology, 43(4), p. 357-363en
dc.identifier.issn1465-3338en
dc.identifier.issn0307-9457en
dc.identifier.urihttps://hdl.handle.net/1959.11/21264en
dc.description.abstractTwo commercial Midwestern egg-type chicken flocks experienced significant increases in mortality rates in April 2013 with clinical signs appearing in 17-week-old pullets on Farm A and in 46-week-old hens on Farm B. Average weekly mortality was 0.44% over a 4-week period on Farm A and 0.17% over an 8-week period on Farm B. On Farm A, flocks in the affected house had a 45% decrease in daily egg production from weeks 19 to 27 when compared with standard egg production curves (P < 0.01) while no decrease in egg production was noticed on Farm B. Post-mortem examination revealed changes consistent with hepatitis-splenomegaly syndrome, including hepatomegaly with serosanguineous fluid in the coelomic cavity and hepatic subcapsular haemorrhages. Microscopic lesions were characterized by multifocal necrotizing hepatitis and intrahepatic haemorrhage. No significant bacteria were recovered from liver samples, but 72 to 100% of the liver samples from affected chickens on Farm A (8/11) and Farm B (7/7) contained detectable amounts of avian hepatitis E virus (aHEV) RNA as determined by polymerase chain reaction. Sequencing and phylogenetic analysis of a 361-base-pair fragment of the helicase gene demonstrated 98.6 to 100% nucleotide identity between the aHEV genomes from Farm A and Farm B, whereas identities ranged from 74.6 to 90.5% when compared with other representative sequences. Sequences from this study clustered within aHEV genotype 2 previously recognized in the USA. In contrast to other reported aHEV outbreaks that occurred in 30-week-old to 80-week-old chickens, in the present investigation clinical aHEV was identified in 17-week-old chickens on one of the farms.en
dc.languageenen
dc.publisherTaylor & Francisen
dc.relation.ispartofAvian Pathologyen
dc.titleIdentification and characterization of avian hepatitis E virus in 2013 outbreaks of hepatitis-splenomegaly syndrome in two US layer operationsen
dc.typeJournal Articleen
dc.identifier.doi10.1080/03079457.2014.935755en
dcterms.accessRightsGolden
dc.subject.keywordsVeterinary Virologyen
dc.subject.keywordsVeterinary Medicineen
dc.subject.keywordsVeterinary Diagnosis and Diagnosticsen
local.contributor.firstnamePriscilla Freitasen
local.contributor.firstnameDarrell Wen
local.contributor.firstnameTanjaen
local.subject.for2008070703 Veterinary Diagnosis and Diagnosticsen
local.subject.for2008070706 Veterinary Medicineen
local.subject.for2008070712 Veterinary Virologyen
local.subject.seo2008830309 Poultryen
local.profile.schoolSchool of Environmental and Rural Scienceen
local.profile.emailpgerber2@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordune-chute-20170602-153749en
local.publisher.placeUnited Kingdomen
local.format.startpage357en
local.format.endpage363en
local.peerreviewedYesen
local.identifier.volume43en
local.identifier.issue4en
local.access.fulltextYesen
local.contributor.lastnameGerberen
local.contributor.lastnameTrampelen
local.contributor.lastnameOpriessnigen
dc.identifier.staffune-id:pgerber2en
local.profile.orcid0000-0002-8343-8299en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:21456en
local.identifier.handlehttps://hdl.handle.net/1959.11/21264en
dc.identifier.academiclevelAcademicen
local.title.maintitleIdentification and characterization of avian hepatitis E virus in 2013 outbreaks of hepatitis-splenomegaly syndrome in two US layer operationsen
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.description.statisticsepubsVisitors: 19<br />Views: 20<br />Downloads: 0en
local.search.authorGerber, Priscilla Freitasen
local.search.authorTrampel, Darrell Wen
local.search.authorOpriessnig, Tanjaen
local.uneassociationUnknownen
local.year.published2014en
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