At what age should a doe be "retired" from breeding? I have 3 does that used to give me litters of 8 to 12 babies. Now at almost 4 years old they are having litters of 3 to 5 each. Could this be caused by age or is it something else?The buck I have is almost 4 years old too. I assume(maybe I shouldn't) that the problem isnt with him since the does are getting pregnant. They started having smaller litters after I gave them a 6 month "vacation" from breeding last summer and fall. They got a little fat and I had to put them on a diet. Could that be the problem? Should I just get new does? What do y'all think?