Formula
Sum (BirthWeight * TotalBornsLiveBirth)
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TotalBornsLivePigsPeriod
Where:
Sum: sum for each birth weight analyzed in the period;
Birth Weight: Average weight of piglets recorded in the analyzed birth;
TotalBornLiveBirth: Total number of piglets born alive in the analyzed birth;
TotalBornsLivePigsPeriod: total number of live piglets analyzed in the period
Considerations:
1) For the sow, consider the period from the 1st sow farrow to the last sow farrow on a given farm