Welfare Science

Welfare Science: Farmed Animal Genetic Diversity Welfare

Genetic selection in livestock for production traits has narrowed genetic diversity, with welfare consequences from genetic diseases, inbreeding and loss of adaptive capacity.

Key Facts

Holstein dairy cattle are genetically homogeneous with high inbreeding coefficients
Broiler chickens bred for rapid growth have compromised leg and cardiovascular health
Genetic concentration in salmon breeding lines creates disease vulnerability
Heritage breeds retain greater genetic diversity and often better health traits
Conservation of rare breeds maintains genetic reserves for future welfare and production needs

Welfare Considerations

High inbreeding in commercial livestock creates genetic load of deleterious alleles causing health problems. Breeds selected for single production traits often have compromised welfare in other dimensions. Maintaining genetic diversity is both a welfare and resilience imperative for farm animal populations.

What You Can Do

Support rare breed conservation through Rare Breeds Survival Trust
Choose heritage breed animal products when available to support diversity conservation
Advocate for breeding programme regulations requiring welfare trait inclusion
Donate to genetic diversity conservation in livestock breeds