Survey of infectious laryngotracheitis outbreak in layer hens and differential diagnosis with other respiratory pathogens

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dc.creatorJLV Chacón
dc.creatorPEB Brandão
dc.creatorLYB Villarreal
dc.creatorNM Gama
dc.creatorAJP Ferreira
dc.date2007
dc.date.accessioned2026-07-07T03:24:37Z
dc.descriptionTrachea, lung, and conjunctive samples from 51 commercial layer farms from Bastos region, São Paulo, Brazil, were submitted to nested-PCR and virus isolation in SPF chicken embryos for ILT diagnosis. This region experienced an outbreak characterized by respiratory signs, decrease in egg production and increased mortality. Out of the 51 tested field samples, 23 were positive for ILT by nested-PCR, 22 were positive after the virus isolation, and 24 were positive when both techniques were used. Newcastle disease virus, Avian pneumovirus, or Mycoplasma gallisepticum were not detected. Infectious bronchitis virus was detected in one farm and Mycoplasma synoviae was detected in eight farms. The high incidence of infectious laryngotracheitis virus (ILTV) detection, the high correlation between the observed clinical signs and the ILTV detection, and the results of differential diagnosis demonstrated that ILTV was the causative agent of the outbreak of respiratory disease observed in Bastos region, São Paulo, Brazil.
dc.formatapplication/pdf
dc.identifier1516-635X
dc.identifierhttps://www.redalyc.org/articulo.oa?id=179713989009
dc.identifier.urihttp://hdl.handle.net/123456789/433145
dc.languageen
dc.publisherFundação APINCO de Ciência e Tecnologia Avícolas
dc.relationhttp://www.redalyc.org/revista.oa?id=1797
dc.rightsRevista Brasileira de Ciência Avícola
dc.sourceRevista Brasileira de Ciência Avícola (Brasil) Num.1 Vol.9
dc.subjectAgrociencias
dc.titleSurvey of infectious laryngotracheitis outbreak in layer hens and differential diagnosis with other respiratory pathogens
dc.typeartículo científico

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