IMPROVED LONGEVITY IN COWS On average, dairy cows have 3 to 4 productive years, bringing their total lifespan to 4.5-6 years, compared to a natural life expectancy of about 20 years. Cows that live longer reduce the need for frequent replacements, lowering costs and increasing overall productivity by providing more milk or offspring over their lifespan. Healthier, longer-living cows also tend to require less medical care, which reduces veterinary expenses and improving herd health. REASONS FOR CULLING IN CANADA – 2020 (DAIRY SALE EXCLUDED) Reproductive Mastitis 16.5 Hoof and leg problems 13.7 Low milk production 11.2 Disease 7.1 Injury to udder/teats 7.1 Injury/Accident 5.9 Old age 3.5 Other 7.1 0 5 10 15 20 Source: Optimising culling and herd structure for better profitability | Ag Proud 27.9 % 25 30 Additionally, longevity contributes to environ- mental sustainability by decreasing the overall number of animals needed, which reduces resource use and the farm’s carbon footprint. Several factors affect cow longevity, including genetics, reproductive health, disease prevention, nutrition, and proper housing. 2 Good management practices like providing balanced diets, preventing disease, ensuring comfort, and reducing stress all play essential roles in extending a cow’s productive life. By focusing on these aspects, farmers can maximise the productivity and efficiency of their herds, contributing to both economic and environm ental goals.
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