Longevity breeding programs in dairy cattle select for cows that remain productive and healthy for more lactation cycles, simultaneously improving welfare and reducing culling rates as a commercial benefit.
Dairy cow longevity is both a welfare indicator and a welfare driver. Cows that live to 5, 6, or 7 lactations have been able to maintain health, avoid serious disease, and withstand the physiological demands of repeated milk production. Selecting for longevity therefore indirectly selects for health, metabolic resilience, and reduced disease burden. The commercial incentive to reduce replacement heifer costs aligns with welfare goals in this case. Longevity programs represent a rare example where market pressures can be harnessed to drive welfare improvement rather than undermining it.