How extending the productive lifespan of dairy cows improves both welfare outcomes and environmental sustainability in dairy production.
The short productive lives of modern dairy cows reflect the welfare burden of intensive milk production. Cows culled after 3 lactations have typically been pushed beyond their capacity to maintain health in the face of high production demands — they leave the herd with lameness, mastitis, or infertility that better management might have prevented. Extending productive life is both a welfare goal and a sustainability indicator: a cow that remains healthy and productive for more lactations has achieved a better state of health throughout her time in the herd. Farms that achieve long productive lives typically combine cow comfort, lameness prevention, good nutrition, and attention to the transition period — a holistic approach that benefits both the animals and the operation.