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An Outbreak of Infectious Laryngotracheitis in California Broilers

J. A. Linares, A. A. Bickford, G. L. Cooper, B. R. Charlton and P. R. Woolcock
Avian Diseases
Vol. 38, No. 1 (Jan. - Mar., 1994), pp. 188-192
DOI: 10.2307/1591856
Stable URL: http://www.jstor.org/stable/1591856
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
An Outbreak of Infectious Laryngotracheitis in California Broilers
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Abstract

Infectious laryngotracheitis (ILT) was diagnosed as the cause of an outbreak of respiratory disease in broiler chickens in California. The classical form of ILT is characterized by dyspnea, gasping, coughing, and expectoration of bloody exudate. Most of the broilers submitted to the diagnostic laboratory showed a non-classical presentation of ILT, in which mucoid tracheitis and conjunctivitis were the most consistent lesions. Historically, most of the ILT cases diagnosed in our laboratory have consisted of layers with classical signs and lesions. It is not known whether this non-classical presentation of ILT in broilers is due to differences in the way broilers respond to ILT infection or to the nature of the ILT virus isolate. /// Se diagnosticó laringotraqueítis infecciosa como la causa de un brote de enfermedad respiratoria en pollos de engorde en California. La forma clásica de laringotraquesítis se caracteriza por disnea, jadeo, tos y expectoración de exudado sanguinolento. La mayoría de los pollos enviados al laboratorio de diagnótico no presentaban la forma clásica de laringo-traqueítis, siendo las lesiones más consistentes la traqueítis mucoide y la conjuntivitis. Históricamente, la mayoría de los casos de laringotraqueítis diagnosticados en nuestro laboratorio han sido en ponedoras con signos y lesiones típicas. No se conoce si esta presentación atípica de la enfermedad es debida a diferencias en la forma como los pollos respondieron a la infección o a la naturaleza de la cepa del virus de laringotraqueítis infecciosa.

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