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Related Experiment Videos

Major trace elements limiting livestock performance in New Zealand.

R S Ellison1

  • 1Alpha Scientific Ltd, PO Box 195, Hamilton, New Zealand. rellison@alpha-scientific.co.nz

New Zealand Veterinary Journal
|July 21, 2005
PubMed
Summary

New Zealand soils often lack essential trace elements like cobalt, selenium, and copper, impacting livestock health. Researchers developed diagnostic tools and supplementation strategies to prevent deficiencies and improve animal well-being.

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Area of Science:

  • Agricultural Science
  • Animal Nutrition
  • Veterinary Medicine

Background:

  • New Zealand soils frequently exhibit deficiencies in cobalt, selenium, and copper, or high levels of molybdenum.
  • These soil conditions can lead to trace element deficiencies in grazing livestock, affecting animal health and productivity.
  • Historical research in the mid-20th century identified trace element imbalances as causes of ill-thrift and diseases like white muscle disease.

Purpose of the Study:

  • To investigate the prevalence and impact of trace element deficiencies in New Zealand livestock.
  • To establish diagnostic reference ranges for key trace elements and vitamin B12.
  • To develop effective supplementation strategies tailored to New Zealand's diverse livestock management systems.

Main Methods:

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  • Development of production-related reference ranges for blood and liver copper, vitamin B12, and selenium.
  • Implementation of various supplementation methods, including pasture topdressing, spraying, and direct animal supplementation.
  • Establishment of routine trace-element monitoring programs for farmers.

    • Main Results:

    • New Zealand researchers pioneered the definition of trace-element related diseases and their causes.
    • Established reference ranges are crucial for diagnosing and preventing deficiencies in cattle, sheep, and deer.
    • A variety of supplementation techniques have been successfully implemented across different farming systems.
    • Copper deficiency is the most commonly diagnosed trace element issue in deer.

    Conclusions:

    • Trace element deficiencies are a significant concern for New Zealand livestock, necessitating ongoing monitoring and management.
    • The development of diagnostic tools and tailored supplementation strategies has greatly improved the prevention and treatment of these conditions.
    • Routine monitoring programs are essential for farmers on deficient land to maintain animal health and productivity.