Modern dairy cows are often culled after 2-3 lactations. Extending productive life through better health management is both welfare-positive and economically beneficial.
Dairy cow longevity is a welfare metric with a paradoxical dimension: a longer life in a high-welfare system is clearly better welfare, but a longer life in a poor welfare system may simply extend suffering. The most welfare-positive approach is to simultaneously extend productive life AND improve conditions during that life. The economic case for longevity aligns with welfare in several ways: healthier cows live longer, so investing in herd health programs extends both welfare and productive life; genetic selection for longevity tends to select for robust constitutions rather than extreme production; and reduced replacement rates mean fewer heifers going through the stressful transition into the milking herd. Key management strategies include proactive lameness monitoring, optimized nutrition transitions around calving, reproductive health programs, and comfortable housing throughout the production cycle.