DairyTalk 682: 31% Annual Replacement: What Drives High Turnover in U.S. Dairy Herds? - by Helmut Demmelhuber

DairyTalk by Helmut Demmelhuber · Sep 23, 2026 · 20m

This podcast episode is based on a scientific analysis of more than five million U.S. dairy cows followed between 2005 and 2017. With average lifespan reported at 4.2 years and annual replacement around 31%, the data raise an important economic question: how many cows leave before they have generated sufficient value to justify their rearing and replacement costs? Injury, reproductive failure, and death were major reasons for herd exit, highlighting the importance of preventing involuntary losses rather than looking at longevity as a genetic trait alone. Exit patterns also varied with…