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Related Experiment Videos

Paratuberculosis in a large goat herd.

G W Thomas

    The Veterinary Record
    |November 12, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Paratuberculosis in goats causes ileum and lymph node lesions. Annual fecal shedding rates remained high despite culling, indicating challenges in controlling this goat disease.

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    Area of Science:

    • Veterinary Medicine
    • Infectious Diseases
    • Ruminant Health

    Background:

    • Paratuberculosis (Johne's disease) is a chronic, debilitating infectious disease affecting ruminants.
    • It primarily targets the small intestine, leading to malabsorption and weight loss.
    • Control in large goat herds remains a significant challenge for livestock producers.

    Purpose of the Study:

    • To investigate the prevalence and diagnostic efficacy of paratuberculosis in a large goat herd over three years.
    • To evaluate the effectiveness of different diagnostic tests for paratuberculosis in live goats.
    • To discuss strategies for controlling paratuberculosis in affected goat populations.

    Main Methods:

    • Longitudinal study over three years in a large goat herd.

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  • Post-mortem examination of affected animals to identify characteristic lesions.
  • Annual fecal sampling to determine the excretor rate.
  • Evaluation of fecal culture, agar gel immunodiffusion (AGID), complement fixation (CF), and tuberculin (PPD) tests for disease detection in live animals.

    • Main Results:

    • Post-mortem examinations revealed lesions primarily in the ileum and mesenteric lymph nodes, often with caseation.
    • Annual fecal excretor rates were 15%, 9%, and 13% over the three study years, despite the removal of positive cases.
    • Fecal culture and AGID tests were found to be useful for detecting paratuberculosis in live goats.
    • Complement fixation and tuberculin tests demonstrated limited value in diagnosing the disease in this herd.

    Conclusions:

    • Paratuberculosis persists in goat herds even with culling, highlighting the difficulty of eradication.
    • Fecal culture and AGID are recommended diagnostic tools for live goat paratuberculosis surveillance.
    • Further research into effective control strategies for paratuberculosis in goat populations is warranted.