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Malabsorption syndrome in broiler chickens

R K Page, O J Fletcher, G N Rowland

    Avian Diseases
    |July 1, 1982
    PubMed
    Summary
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    Reoviruses cause a disease syndrome in broiler chickens, leading to poor growth, feathering, and digestive issues. These viruses can also increase lameness incidence in affected flocks.

    Area of Science:

    • Avian pathology
    • Virology

    Background:

    • Broiler chickens can develop a complex disease syndrome impacting growth and health.
    • Reoviruses are known pathogens in poultry, but their role in specific syndromes requires further investigation.

    Observation:

    • Affected broiler chickens displayed poor shank pigmentation, reduced weight gain, and poor feed conversion.
    • Clinical signs included poor feathering, enlarged proventriculus, and reduced gizzard size.
    • Reoviruses were consistently isolated from field cases of this syndrome.

    Findings:

    • Experimental inoculation of reovirus isolates into susceptible chicks reproduced key signs and lesions of the field syndrome.
    • The pathogenicity of isolated reoviruses varied, influencing disease severity.
    • Reovirus infection significantly increased the incidence of lameness compared to controls.

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    Implications:

    • Reoviruses are confirmed causative agents of this broiler disease syndrome.
    • Understanding reovirus pathogenicity is crucial for developing effective control strategies.
    • This research highlights the economic impact of reoviruses on broiler production through reduced growth and increased disease incidence.