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Bacterial coryza in turkeys in Texas

B Panigrahy, L C Grumbles, R J Terry

    Poultry Science
    |January 1, 1981
    PubMed
    Summary

    A novel bacterium, similar to Alcaligenes fecalis, was identified as a cause of turkey poult coryza. This pathogen consistently induced respiratory illness and was re-isolated from affected birds.

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    Avian diseases·2001

    Area of Science:

    • Veterinary Microbiology
    • Poultry Diseases
    • Bacterial Pathogenesis

    Background:

    • Coryza is a significant respiratory disease in turkey poults.
    • Previous studies have identified various etiological agents, but a definitive cause for certain outbreaks remains elusive.
    • The need for accurate diagnosis and identification of causative agents is crucial for effective disease management in poultry.

    Purpose of the Study:

    • To isolate and characterize the bacterium responsible for coryza in turkey poults.
    • To experimentally reproduce coryza using the isolated bacterium.
    • To investigate potential co-infections and rule out viral etiologies.

    Main Methods:

    • Bacterial isolation and identification from infected turkey tracheas.
    • Intranasal inoculation of 1-3 day old poults with isolated bacteria.
    • Re-isolation of bacteria from experimentally infected poults.
    • Serological testing for avian influenza, Newcastle disease, and infectious bursal disease viruses.

    Main Results:

    • A motile, gram-negative bacillus, similar to Alcaligenes fecalis, was consistently isolated from coryza-affected poults.
    • Intranasal inoculation successfully reproduced coryza in poults.
    • Co-inoculation with Escherichia coli showed a potential increase in air sacculitis incidence.
    • No avian influenza, Newcastle disease, or infectious bursal disease viruses were detected.

    Conclusions:

    • The isolated bacterium is identified as a primary causative agent of coryza in turkey poults.
    • Escherichia coli may act as a contributing factor in disease severity, potentially leading to air sacculitis.
    • Viral infections were ruled out as the cause of these specific coryza outbreaks.

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