Quote Originally Posted by AK907 View Post
Check out Rodent Pro's website. They have nutritional info on there. It isn't a MAJOR difference, but they are still a bit more nutritious than mice. Actually, a quick google search should turn up several results if you want further proof. Also rats are a more substantial meal and switching an adult that has imprinted on mice can be a real pain. Anyone who has ever had an adult mouser knows what a pain in the butt it is feeding 3-5+ mice at a time vs. one appropriate sized rat.
If the prey is the same size, how would rats be more substantial? I only ask because you're more educated in this subject than I am. As far as that graph goes, it looks like Mice are higher in Gross energy kcal/g up to 10g+ size.