The productive lifespan of dairy cows has shortened dramatically as milk yields have increased. Understanding the welfare implications of shortened dairy cow lives is central to dairy welfare assessment.
Dairy cow longevity welfare reflects the biological cost of extreme milk production. The same genetics that produce 12,000+ litre annual yields place metabolic demands that compromise immune function, reproductive efficiency, and structural soundness. The welfare consequences - chronic lameness, mastitis, metabolic disease - represent sustained suffering across the productive life. Longevity as a breeding goal is both economically rational (replacement costs) and welfare-positive (fewer animals experiencing early disease and culling). Systems that support longer productive lives through better nutrition, housing, and management deliver compound welfare benefits.