Quote Originally Posted by rjk890 View Post
I also used Clays design and currently have 5 racks running with 6 concrete mixing tubs each. They are each stocked with 1.5 breeder rats.
I do not pull pregos, and have been doing it this way for about two years.
I leave the same 1.5 group in the same tub for life, and do not have many issues.

What size are your female breeders?
I have found that female rats under 250g do not make good mothers. They will eat their own litter.

If you touch the pinks with your bare hands, some males, or even some moms will eat them. I buy the cheap plastic gloves at the dollar store for moving pinks during cleaning. (They are $1. for 100ct.)

I have 1 rack with 6 concrete mixing tubs stocked with 1.5 ASF's running the same way, and have no issues with them either.
I am going to do an experiment by leaving prego's in with the male and females in a few tubs and pulling females out prego females from the other and see which yield the most babies and which have a better baby survival rate. So far I have had 50 babies in 7 days from 5 moms and all of which were pulled from the breeder rack. I have had 4 total lost babies but none were due to the mother eating them. So I think this way works well. I am gonna tray and leave a few in tubs like I said. I keep 1.3 in the tubs so we will see what happens. Oh and out of them 5 moms one wasn't a good mother so I fostered out her babies and am giving her one more chance cause that was her very first litter and she gave 16 babies 3 of which died for unkown reasons.