Why adjust the pig?

The uniformity of piglets in the litter is a key factor affecting the weaning rate.
Piglets of the same size are raised together,
Daily weight gain and survival rate are better,
The bigger the baby is, the easier it is to take care of it during the subsequent weaning period.
Groups of piglets with large size differences are more likely to compete.
For thin piglets,
Competing with larger littermates is a big disadvantage,
Failure to obtain milk increases mortality.