The short productive lives of modern dairy cows reflect a welfare problem rooted in selection for extreme milk production at the cost of health and longevity.
Dairy cow longevity is a welfare indicator that reveals the hidden costs of extreme milk production selection. Cows bred to produce over 10,000 liters annually are metabolically stressed throughout their lactations, with energy demands that compromise immune function and reproductive performance. The result is a cascade of health problems — mastitis, lameness, displaced abomasum — that make cows economically unviable before their third lactation. Breeding programs that prioritize health and longevity alongside production are demonstrating that sustainable welfare and commercial success are compatible.