need help

I have a trio of ASF's that have had a few litters. the first litter no problems i used most as feeders and left like 2 from it with the other 3. the problem i am having is now every litter they have the babys are getting eaten by the others. not sure what to do its getting to the point were i just want to give up on them. any help would be appreciated.

After they are weaned around 6-8 weeks, I separate mine into "grow up" tanks; separating males from females to prevent inbreeding. My breeding sets are in 20L and 40Br tanks while my weaned ASFs are in 10gal depending on how many I have at any given time.