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Related Experiment Videos

Chronic copper poisoning in two Holstein cows.

R R Tremblay1, J D Baird

  • 1Department of Clinical Studies, University of Guelph, Ontario, Canada.

The Cornell Veterinarian
|April 1, 1991
PubMed
Summary

Two Holstein dairy cows experienced chronic copper poisoning and acute hemolytic crisis without known excessive copper exposure. Organ damage, including liver and kidney, accompanied severe red blood cell destruction.

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Area of Science:

  • Veterinary Medicine
  • Toxicology
  • Animal Science

Background:

  • Chronic copper poisoning can occur in cattle, often linked to dietary or environmental factors.
  • Acute hemolytic crisis is a severe complication of copper toxicosis, characterized by rapid red blood cell destruction.

Observation:

  • Two mature Holstein dairy cows from different herds presented with clinical signs of acute hemolytic crisis.
  • Post-mortem examinations revealed toxic concentrations of copper in serum, liver, and kidney tissues of both animals.
  • No history of excessive dietary or environmental copper exposure was identified in either case.

Findings:

  • The cows exhibited massive hemolysis, indicating severe red blood cell breakdown.
  • Concurrent involvement of the liver and kidneys was observed, contributing to the disease's progression.
  • The absence of identifiable external copper sources suggests potential idiopathic or unusual exposure routes.

Implications:

  • This case highlights the potential for severe copper poisoning and hemolytic crisis in dairy cattle even without clear exposure history.
  • Understanding atypical copper toxicosis is crucial for accurate diagnosis and herd management in veterinary practice.
  • Further investigation into non-traditional copper exposure pathways may be warranted to prevent future incidents.

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