Yes that is what is on the bag. I have never seen any of the f6, f9 or f11. I am willing to ask a local shop to order f9 or something if it will be better. All I have been reading is that 15-18% protien is good for rats. ALL the Mazuri is under 18% except this one...what is up with that???? I read where if you want 100% groth you feed 25% protien till weaning then taper off. Now my rats are not in a warm building so I was thinking of leaving them at the higher protien to help with them producing heat. But you can see I am at a loss. so any info will be great.