The average age of the American herd is increasing due to a decrease in young cattle, with 499,110 fewer dairy cows slaughtered in the past 65 weeks compared to the same period in 2021-2023. This decrease in young cattle is due to dairy farmers using beef bulls, resulting in higher meat prices and encouraging the retention of cows for longer periods. Consequently, the number of dairy cows remains almost stable, indicating a decline in the replacement rate and an increase in the average age of cows. No new quarterly figures on the build-up of the US herd are available yet.