Increasing the productive lifespan of dairy cows is simultaneously a welfare improvement and a sustainability benefit — fewer replacement heifers are needed, reducing the total environmental footprint.
Dairy cow longevity is a welfare issue that has found unusual alignment with sustainability goals. A dairy cow culled at age 4 has experienced months of progressive disease and then a stressful journey to slaughter — all of which could have been avoided with better health management. A cow reaching 8 or more lactations has demonstrated that the system is providing sufficient health and welfare to maintain productive function. Breeding for longevity, preventing the diseases that drive early culling, and maintaining body condition across the full productive life are all achievable management goals that simultaneously improve welfare and reduce environmental impact.