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Mycobacterium paratuberculosis infection in two llamas
E B Belknap1, D M Getzy, L W Johnson
1Department of Clinical Sciences, Colorado State University, Fort Collins 80523.
Summary
Mycobacterium paratuberculosis was diagnosed in two llamas using bacteriologic culturing and DNA probe testing. The animals exhibited diarrhea and weight loss, with gastrointestinal lesions similar to those in cattle.
Area of Science:
- Veterinary Microbiology
- Infectious Diseases
- Llama Medicine
Background:
- Mycobacterium paratuberculosis is an obligate intracellular bacterium known to cause Johne's disease in ruminants.
- Diagnosis in camelids, such as llamas, is less commonly reported compared to cattle.
- Understanding the disease in diverse hosts is crucial for effective management and control.
Observation:
- Two llamas presented with clinical signs of diarrhea and significant weight loss.
- Fecal and intestinal specimens were collected for diagnostic testing.
- Gastrointestinal tract examination revealed pathological changes.
Findings:
- Bacteriologic culturing confirmed the presence of Mycobacterium paratuberculosis.
- DNA probe testing corroborated the bacteriologic findings.
- Pathologic changes observed in the llamas' gastrointestinal tracts mirrored those seen in cattle infected with M. paratuberculosis.
Implications:
- This diagnosis highlights Mycobacterium paratuberculosis as a potential pathogen in llamas.
- The similar lesions suggest a shared pathogenesis or susceptibility across species.
- Further research into llama-specific Johne's disease is warranted for improved diagnostics and treatment strategies.