How do you know the females are not getting enough protein when nursing? Have you had sick rats when they wean? Are they not maintaining weight very well? What are the effects from not feeding enough protein?
I'm asking because I take quite a bit of pride in my colony. I treat all the breeders like pets, and actually serve two different feeds for my breeders. I pay close attention to their mass at weaning, how the litters look, how many in a litter, how big they are at weaning... it's all very important to me.
I have great success with 16-18%. Now I read that somehow my rats are not being fed the proper amounts of protein?