Why cows are leaving herds earlier — and what this means for welfare
Dairy cow productive lifespan has declined dramatically as production has increased. In the 1960s, UK dairy cows averaged 5-6 lactations; today 2-3 lactations is typical. Cows are culled for reproductive failure, mastitis, lameness, and metabolic disease — all conditions exacerbated by high production genetics and management. This represents a significant welfare issue: healthy young animals killed for economic reasons before their natural lifespan.
Long-lived cows experience different welfare profiles than short-lived high-production cows. Cows that survive multiple lactations in good health demonstrate resilience and adaptability. The culling of young productive cows due to treatable conditions (mastitis, lameness) represents welfare failure — animals suffering from manageable diseases until economically unviable, then killed. Extending productive life through better health management is simultaneously a welfare and economic improvement.
Modern genomic selection indices increasingly include longevity and health traits alongside production. Nordic Red breeds (Finnish, Swedish, Norwegian Reds) historically selected for health and longevity show dramatically better survival curves than Holstein populations selected primarily for production. UK Holstein breed improvement programs have increased longevity weighting in selection indices. Incorporating true cost-of-production including health, reproduction, and cull revenue shows longer-lived cows are often more profitable — aligning welfare and economics.