Predicting the weaning age - 1 week batch
What batch system are you running? 1 week, 2 week, 3 week?
The average weaning age of your batch can be predicted from the number of females bred during the breeding week
This spreadsheet aims to illustrate that it is essential that the "batch" is made quickly before day 7 post-weaning
And: the importance of classifying day one of the batch as the day after weaning