Farm Animals

Farmed Pig Genetic Welfare Trade-offs

Pig genetics influence welfare outcomes, with selection for growth rate and litter size creating inherent welfare trade-offs that require management.

Key Facts

High-lean breeds have reduced pain sensitivity thresholds in some studies
Large litter size selection increases neonatal piglet mortality in underprepared systems
Stress-susceptible halothane gene was widespread in pig populations until genetic testing
Slower-growing breeds show better welfare indicators in some measures
Breeding indices that include welfare traits alongside production traits exist but are rarely used

Welfare Considerations

The genetic selection that has shaped modern commercial pig breeds has created inherent welfare tensions. Breeding programmes that actively include welfare traits - stress susceptibility, leg strength, immune function - alongside production traits can reduce the welfare cost of commercial pig genetics. Genetic diversity preservation also buffers against disease susceptibility.

What You Can Do

Support breeding programmes that include welfare traits in selection indices
Advocate for genetic diversity in commercial pig breeding
Choose pork from producers using welfare-aware genetic lines