Livestock

Inherited Genetic Disorders in Cattle: Welfare and Breeding Decisions

How genetic defects affect cattle welfare and how breed programmes prevent transmission.

Key Facts

Spinal muscular atrophy, arthrogryposis multiplex, and neuropathic hydrocephalus affect multiple cattle breeds
Carrier parents are typically normal — affected calves are severely compromised at birth
Humane euthanasia of severely affected calves is a welfare obligation
DNA testing of bulls and breeding cows identifies carriers before they produce affected offspring

Welfare Considerations

Cattle with severe genetic disorders experience significant welfare compromise from birth — inability to stand, neurological dysfunction, and organ abnormalities cause suffering that cannot be ameliorated. Welfare-focused response euthanises severely affected calves promptly. Population-level welfare improvement requires DNA testing breeding animals to identify and exclude carriers from breeding programmes.

What You Can Do

Test all breeding bulls for known genetic disorders before use — include carriers in culling plans
Euthanise severely affected calves born with genetic conditions without delay — delay is welfare harm
Support breed societies that mandate genetic testing for known welfare-relevant disorders