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PEB Brandão ; LYB Villarreal ; NM Gama ; AJP Ferreira ;Revista Brasileira de Ciência Avícola 2007, 9 1

Autor: JLV Chacón

Fuente: http://www.redalyc.org/


Introducción



Revista Brasileira de Ciência Avícola ISSN: 1516-635X revista@facta.org.br Fundação APINCO de Ciência e Tecnologia Avícolas Brasil Chacón, JLV; Brandão, PEB; Villarreal, LYB; Gama, NM; Ferreira, AJP Survey of infectious laryngotracheitis outbreak in layer hens and differential diagnosis with other respiratory pathogens Revista Brasileira de Ciência Avícola, vol.
9, núm.
1, enero-marzo, 2007, pp.
61-67 Fundação APINCO de Ciência e Tecnologia Avícolas Campinas, SP, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=179713989009 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative Brazilian Journal of Poultry Science Revista Brasileira de Ciência Avícola ISSN 1516-635X Jan - Mar 2007 - v.9 - n.1 - 61 - 67 Survey of Infectious Laryngotracheitis Outbreak in Layer Hens and Differential Diagnosis with other Respiratory Pathogens Author(s) ABSTRACT Chacón JLV1 Brandão PEB2 Villarreal LYB1 Gama NM3 Ferreira AJP1* Trachea, lung, and conjunctive samples from 51 commercial layer farms from Bastos region, São Paulo, Brazil, were submitted to nestedPCR 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 cl...





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