on average how many litters do you let your ASF's have before retireing them and starting up a new trio? Mine have only had 3 litters the second of which was HUGE and this last litter was pretty darn SMALL. do you think that that last litter of 32 pinks (between 2 mamas) tired them out, makeing this litter smaller (11 pinks between mamas) or are they just past their prime? sorry if this is a newb question but im new to this whole thing. :) any help will be greatfully accepted