I've been looking into breeding feeder mice any advice?
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Don't try to start them too early - 12 weeks is when I have had my best luck. I have 3 groups of 4 females and 2 males. Boy goes in a bin of 4 girls for 2 weeks, then he comes out and each girl goes in a bin. Babies get pulled at 3-4 weeks, moms get a 3 week break before breeding again.
This girl that had 23 is a year old. I was going to feed her off, but I think I am gonna wait!