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Related Experiment Videos

Copper supplementation of sheep.

G J Judson, C L Trengove, M W Langman

    Australian Veterinary Journal
    |February 1, 1984
    PubMed
    Summary

    Oral copper wire particles significantly increased liver copper in sheep over 80 weeks, unlike other methods. Winter conditions and abomasal damage also impacted copper levels in untreated animals.

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    Area of Science:

    • Animal Science
    • Veterinary Medicine
    • Nutritional Physiology

    Background:

    • Copper is an essential trace element for sheep health.
    • Copper status in grazing sheep can be influenced by various factors, including diet and supplementation.
    • Assessing effective copper supplementation strategies is crucial for livestock health and productivity.

    Purpose of the Study:

    • To evaluate the efficacy of six different copper supplementation methods in Merino sheep.
    • To determine the impact of these methods on plasma and liver copper concentrations.
    • To investigate factors influencing copper status in grazing sheep.

    Main Methods:

    • Six copper supplementation methods were administered to Merino sheep over 80 weeks.
    • Plasma and liver copper concentrations were measured.
    • Plasma pepsinogen activity was monitored as an indicator of abomasal damage.

    Main Results:

    • Oral administration of 3 g oxidised copper wire particles significantly increased liver copper concentrations compared to controls.
    • Subcutaneous injections of copper diethylamino cupro-oxyquinoline sulphonate yielded transient liver copper increases.
    • Other oral copper sulphate and copper oxychloride treatments showed minimal impact on liver copper.
    • Untreated sheep exhibited lowest liver copper in winter, correlating with increased abomasal damage and plasma pepsinogen.

    Conclusions:

    • Oxidised copper wire particles represent an effective long-term strategy for improving liver copper status in sheep.
    • Plasma copper levels were not a reliable indicator of copper status under the tested conditions.
    • Seasonal factors and gastrointestinal health significantly influence copper status in grazing sheep.

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