Pig Breeding Programme Design: Balancing Production and Welfare Traits

Modern pig breeding programmes increasingly incorporate welfare traits alongside production metrics. The way breeding goals are designed determines whether welfare improves or is inadvertently compromised.

Key Facts

Traditional breeding goals focused on growth rate, feed conversion, and litter size
Increased litter size selection has inadvertently reduced piglet birth weight and increased neonatal mortality
Breeding programmes now increasingly include traits for leg health, temperament, and longevity
Genomic selection allows rapid progress on traits that are expensive to measure directly
International cooperation between nucleus herds is essential for maintaining genetic diversity
Welfare trait heritability varies - meat quality traits are more heritable than behavioural traits

Welfare Considerations

Breeding decisions made at the genetic level propagate through millions of commercial animals, making breeding programme design one of the highest-leverage welfare interventions in pig production. When welfare traits are absent from breeding goals, the genetic trajectory of the population inevitably compromises welfare as production traits are optimised. Including measurable welfare traits in selection indices can deliver sustained improvement in population-level welfare across generations.

What You Can Do

Engage with breeding companies on their welfare trait inclusion in selection indices
Support industry initiatives that incentivise breeding for welfare traits
Advocate for mandatory welfare trait reporting by pig breeding companies
Contribute to research measuring the heritability and genetic correlations of welfare traits
Choose products from supply chains that incentivise welfare-positive genetics