Quote Originally Posted by jasbus View Post
15% protein is just fine... for your male rats.

Females need more. around 19%. You may not be seeing the effects, but it's happening...

I use ADM 19% for my rats and Mazuri 6F/ADM for my mice.

I breed mice not rats. Im still experimenting. Didnt want too much protien in thier diet. So far its worked good for me tho. 10 pups the first litter and the other mom looks bigger than the first but she hasnt popped yet