my females are nursing while they are pregnant...I have experienced 2 loses in 6 years. I currently have 72 tubs of rats and plan to expand another 84 tubs.
and I seem to feed everyone else's snakes...so that equation doesn't apply to me.
And if that works for your set up great! I was simply offer you another way to calculate your output..nothing more.
When you've got 10,000 people trying to do the same thing, why would you want to be number 10,001? ~ Mark Cuban