I'm working on a design for a small scale breeding set up for people that want to get everything up and running. I am still trying to find tubs that make the grow out rack cost effective to build, but I will find them LOL.

I am building my breeding racks now out of Home Depot mixing tubs (27" x 19.75" x 6"). I make the racks four levels high and two levels wide for a total of eight tubs. I have been running 1.3 females in these tubs because the birthing rack I made holds 24 tubs.

The birthing rack is made using medium (16" x 12" x 4") petmate litter pans. These are built four tubs wide and six levels tall.

This design keeps the overall height of the rack low and manageable and allows you to keep 24 females running. You will produce 100-120 rats per month in this set up.

I don't have the perfect grow out racks done yet, but I am guessing that they are going to end up being the large mixing tubs from Home Depot (36" x 30" x 8"). I stole the hopper design from Freedom Breeder, and I am trying to figure out the water now.