Lifetime Daily Yield is your baseline measurement
Lifetime Daily Yield is defined as the total lifetime production divided by the total days of life, from birth to culling. It can be used to compare performance between farms. The Selko profit calculator is a simple tool that can be used to identify opportunities to increase Lifetime Daily Yield and thus make dairy farming more profitable and sustainable1.
Lifetime Daily Yield
There are 4 parameters that have an impact on LDY: age at 1st calving, production per lactation, calving interval and number of productive years2. Out of these, the number of productive years, in other words: longevity has the biggest impact.