The stuff I use is about 20% protein, 4.5% fat. I can't remember the fibre content off the top of my head. It's made specifically for rodents and is very similar to the type used by laboratories (which I also use sometimes).
I was looking at horse food yesterday and considering using it, but the pellet size was too small to work with my system.
I was looking at horse food yesterday and considering using it, but the pellet size was too small to work with my system.