dont know much about ASFs - only started breeding them this year...

soo...... is it normal for a female to have a second litter without the re-introduction of a male?
one of my females had her 1st litter a while ago (was put in a seperate tub whilst pregnant)
the little ones are now about 1.5/1.75" body length

i noticed a few days ago the mother was getting a 'golf-ball' appearance again, so put the 1st litter with other similar sized ones
mother has just had another 8 babies today!?!
no male has been near/can get to her, since the early stages of her 1st pregnancy

as said..... 'is it normal'?

thanks