Number of days of concentrate build-up or reduction.
When a cow has to be fed more or less concentrate, for example by adjusting the feeding table or simply because she gives more or less milk, it will take a few days to do this, depending on the setting per feed type regarding build-up or reduction.
As long as these days last, she will finish this assignment before accepting a new calculation.
It is good if you also have a column in the list where you check the concentrate dose with how many days the cow is still busy building or breaking down the concentrate which can deviate the most.