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Copper oxide powder as a copper supplement for sheep

N A Cavanagh1, G J Judson

  • 1Waite Agricultural Research Institute, Urrbrae, Australia.

Journal of Trace Elements and Electrolytes in Health and Disease
|December 1, 1994
PubMed
Summary

Oral copper oxide powder effectively increased copper levels in sheep for 12 weeks. A 2.5 g dose prevents copper deficiency without toxicity risk in sheep.

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Area of Science:

  • Animal Nutrition
  • Veterinary Medicine
  • Trace Mineral Metabolism

Background:

  • Copper is an essential trace element for sheep health.
  • Dietary copper deficiency can impact sheep productivity and well-being.
  • Oral copper supplementation is a common strategy to address copper deficiencies.

Purpose of the Study:

  • To evaluate the efficacy of oral copper oxide powder in raising copper concentrations in sheep.
  • To determine the dose-response relationship of copper oxide powder administration.
  • To assess the risk of copper toxicity associated with copper oxide powder supplementation.

Main Methods:

  • Merino sheep were randomly assigned to six treatment groups.
  • Groups received varying oral doses of copper oxide powder (0 g to 40 g).
  • Liver and blood copper concentrations, plasma enzyme activities, and liveweight gains were monitored.

Main Results:

  • Copper oxide powder (250-350 microns) increased liver copper for at least 12 weeks.
  • Higher doses (10-40 g) posed a risk of copper toxicity, evidenced by elevated enzymes and reduced weight gain.
  • Particles were retained in the gut for at least 13 days, suggesting slow release.

Conclusions:

  • A 2.5 g dose of copper oxide powder is effective in preventing short-term copper deficiency in sheep.
  • This dose level avoids the risk of copper toxicity.
  • Copper oxide powder can be a valuable tool for managing copper status in sheep under specific conditions.

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