FORMULA 



Sum (DaysLactationCycleOfWeaning)

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     Weaning QtyTotalFinalCycle




WHEN:


Sum: sum for each TOTAL weaning that is the last weaning of the cycle.


DaysLactationWeaning Cycle: difference in days of the last TOTAL weaning of the sow in the cycle and farrow of the sow in the cycle.


QtyWeaningTotalFinalCycle: Number of TOTAL weanings, whose total weaning is the last weaning of the cycle.


ATTENTION!


1-Consider only the TOTAL WEANS, whose total weaning is the last weaning of the cycle.


2-Disregard the total weaning of a nurse sow after an abortion. We are considering only females that have had farrow and total weaning in the cycle.