Farm Animals

Sheep Selenium Deficiency and Supplementation Welfare

Selenium deficiency in sheep causes white muscle disease and reproductive failure, and appropriate supplementation is a significant welfare intervention.

Key Facts

Selenium deficiency causes white muscle disease (muscular dystrophy) in lambs
UK soils are predominantly selenium deficient requiring dietary supplementation
Overdose of selenium is toxic and fatal, requiring accurate dosing
Boluses, drenching, and dietary supplementation are the main delivery methods
Ewes supplemented before lambing pass protection to lambs through colostrum

Welfare Considerations

White muscle disease causes severe pain and inability to stand in affected lambs. Preventive selenium management is straightforward and highly effective. The welfare case for appropriate selenium supplementation in deficient areas is strong and economically justified.

What You Can Do

Test soil and forage selenium levels on your farm
Ensure ewes receive appropriate selenium supplementation before lambing
Use veterinary-guided dosing to avoid toxic overdose
Include selenium status in annual sheep health planning with your vet