Dairy Cow Longevity: Why Cows Are Culled Too Early

The average dairy cow is culled after just 2-3 lactations, far short of her natural lifespan of 20 years. Understanding why and how to improve longevity is central to dairy welfare reform.

Key Facts

Average productive life of a dairy cow in the UK is 2.5 lactations (about 5 years)
Natural lifespan of cattle is 15-20 years; cows could produce milk for 10 or more years
Mastitis, lameness, and reproductive failure account for over 70% of involuntary culling
High-yielding Holstein cows are especially prone to metabolic disease and early exit
Longevity-focused breeding programmes can significantly extend productive life without yield loss

Welfare Considerations

Early culling is both a welfare problem and an economic signal of poor herd health. Cows culled due to lameness, mastitis, or fertility failure have typically experienced prolonged suffering before removal. Genetic selection for longevity, combined with better housing design and proactive veterinary care, can keep cows healthier and productive for longer. Some progressive dairy systems now achieve average productive lives of 4-5 lactations — demonstrating this is achievable at scale.

What You Can Do

Choose dairy products from farms with longevity-focused welfare certifications
Support breed societies and research into genetic longevity selection in dairy cattle
Advocate for welfare metrics in dairy subsidies that include average culling age
Ask your dairy supplier for herd longevity data as part of welfare transparency