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Related Experiment Videos

Otitis in cattle, an aetiological review.

E R Duarte1, J S Hamdan

  • 1Department of Microbiology, Biological Science Institute, Federal University of Minas Gerais, Brazil.

Journal of Veterinary Medicine. B, Infectious Diseases and Veterinary Public Health
|March 5, 2004
PubMed
Summary

Otitis externa in cattle, common in tropical regions, is caused by nematodes and mites, potentially leading to fatal neural lesions. Treatment for this ear infection in cattle lacks standardization and evidence.

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Area of Science:

  • Veterinary Medicine
  • Parasitology
  • Bacteriology

Background:

  • Otitis externa significantly impacts cattle, particularly in tropical and subtropical areas.
  • Mature and Zebu cattle exhibit higher prevalence, with advanced cases causing fatal neural lesions.
  • Calf otitis is linked to concurrent respiratory diseases and mixed bacterial infections.

Purpose of the Study:

  • To review the primary etiological agents of otitis externa in cattle.
  • To identify common bacterial pathogens involved in bovine otitis, especially in calves.
  • To highlight the lack of standardized and evidence-based treatment protocols for bovine otitis.

Main Methods:

  • Literature review of studies on bovine otitis externa.
  • Identification of predominant parasitic and bacterial causes.

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  • Analysis of clinical presentation and associated conditions.
  • Main Results:

    • Rhabditiform nematodes and mites (Raillietia spp.) are predominant agents in tropical/subtropical regions.
    • Common bacterial agents in calves include Actinomyces spp., E. coli, P. multocida, and Mycoplasma bovis.
    • Irreversible neural lesions can occur in advanced stages of bovine otitis externa.

    Conclusions:

    • Bovine otitis externa is multifactorial, involving parasites and bacteria.
    • Effective and standardized treatment strategies for bovine otitis are currently lacking.
    • Further research is needed to develop evidence-based control and treatment protocols for cattle ear infections.