I can't speak on mice, but I have a few that will only eat ASF.

If they take them I will feed as many as I can to hit that 10% marker..

Example:

1000 gram female,

10% of body weight = 100 grams.
1 large mouse = 20 grams or so..

If you can get her to eat 5 mice than there would be no difference in growth of the BP than you would get feeding rats.

Hope this helped!
Chris.