Quote Originally Posted by daniel1983
Just to clarify....i generally feed adult mice that are in the 20-22 gram range...not the older mice that can possibly be 30-40 grams...

Jamie, what size do you consider a small rat...60 grams??
I buy from Rodent Pro. They consider a small rat 45-84 grams. Now I have to say, I have never weight the rats and that is a pretty big size range. I feed all my sub adults and adults 1 small rat every 7 days (and sometimes I give them a week break). On Adam's advice, I am going to keep an eye on the breeding size females and feed them extra if they appear to still be looking for food. Seems to work for me though!