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Chronic copper toxicosis in sheep

R G Arora, L Andersson, R S Bucht

    Nordisk Veterinaermedicin
    |April 1, 1977
    PubMed
    Summary
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    Chronic copper toxicosis in adult ewes was investigated, revealing elevated copper and iron levels in affected sheep livers and kidneys. Breed predisposition, particularly in Texel sheep, and increased commercial feed use may contribute to this poisoning.

    Area of Science:

    • Veterinary Medicine
    • Animal Toxicology
    • Sheep Husbandry

    Background:

    • Spontaneous cases of chronic copper toxicosis in adult ewes were observed between 1974 and 1976.
    • Clinical and pathoanatomical findings indicated copper poisoning.

    Purpose of the Study:

    • To investigate the causes and contributing factors of chronic copper toxicosis in ewes.
    • To substantiate the diagnosis through biochemical analysis.

    Main Methods:

    • Clinical examination of affected ewes.
    • Pathoanatomical examination of post-mortem tissues.
    • Analysis of copper and iron content in liver and kidney tissues.

    Main Results:

    • Diagnosis confirmed by significantly elevated copper and iron levels in the liver and kidneys.

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  • Texel breed sheep, a heavier breed, appeared more susceptible, possibly due to higher feed intake.
  • Breed predisposition and increased commercial feed with supplementary copper were identified as potential risk factors.

    • Conclusions:

    • Chronic copper toxicosis in ewes is linked to breed susceptibility and dietary factors.
    • Increased use of commercial feeds with supplementary copper poses a cumulative poisoning risk.
    • Management strategies should consider breed-specific nutritional needs and copper levels in feed.