Selenium deficiency

Veterinary advice should be sought before applying any treatment or vaccine.

Selenium Deficiency

Selenium (Se) deficiency occurs in cattle that don't receive enough selenium in their diet. It is not a common issue in most cattle, as selenium is usually present in the soil. A deficiency in selenium is more likely to occur in calves living in regions with low Se content in the soil. The amount of Se that cattle require in their diet varies by age, weight and use.


Abnormal gait
Difficulty suckling or swallowing
Difficulty breathing
Reduced performance


  • History
  • Clinical signs
  • Physical exam
  • Sensitive fluorometric Se assay


Selenium supplements : added to the cow's diet, however with the guidance of a veterinarian and after conducting an accurate diet analysis as selenium is also toxic in levels higher than 2 mg/kg DM.


  • Provide a balanced diet with adequate levels of selenium.

Article Reference

Risk Factors

  • Cattle living in Se-deficient regions

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