If you want to enter the birthweight of the piglets, you open the sow card and right-click on the section “Farrowing”. You then get a window like this: 




Here you put in a checkmark at “Kg” if you want to enter the weight of the whole litter or you put a checkmark in “Average kg” if you want to enter the average weight of the pigletsIf you choose both then your sow card will look like this: 





Then you can enter the total weight of the whole litter in “Kg” and the program will calculate the average weight of each piglet in “Average kg” and the other way around.  

You can also add this column to the main farrowing data entry window in the same way (using layout setup and adding the column).