Mice rotation question

I have had this one male mouse in with three females for like two months and no pinks. I have seen him mate them several times. I really think the poor old boy is shooting blanks :grin01:
I want to put these females with a different male but I am afraid if I put a new male in with them they may gang up on the unfamiliar mouse. I have a male that is housed with only one female, she has a litter with fuzzies. I am thinking if I put the three females in with that male, and put the lone female and her fuzzies in with the dud male, the switch to new territory will help the three females not attack the resident male in the new cage. But I am wondering if the other male would kill the fuzzies because they are not his or will he be a "stepdad" to them? Maybe better to feed him off?

Do not put old male in with lone female and fuzzies. She would attack him and probably kill him. Leave those two alone. If you are not getting babies from him He might he to old. Fix up a new cage with them and a new male. Never have 2 males in same cage, they will kill each other.

No I wasn't going to put the males together. What I was thinking was basically to switch the females. They would all be going into new cages with new males. The females are the only ones I would move -basically the females from the first cage are put in with the fertile male, and the lone female with her litter of fuzzies from that cage goes with the older nonproducing one. The only concern I really have is the male killing those fuzzies. But I didn't think about the female killing HIM.

Personally I would feed the dud male, put the good male in with the three females and raise up another male to replace the good one. If the good male is large and mature enough, there should be no problems in the move.

Thanks. I guess my thought was that by moving the females, the fact that they are in unfamiliar surroundings, would make them more likely to accept a new male than if I moved him into their territory.

I wouldnt even worry about it.

You can try the 2 females with a new male, just put them all in a newly cleaned cage with fresh bedding and no old cardboard or wooden cage furniture that retain any smell.

Do NOT put a new male in with a female with a litter, he will probably kill the litter, or the female will kill him first.