Stretching your dog feed.

I am only feeding 4 dogs but still like to mix up the menu and they sure appreciate it,i feed shawnee mills 28/15 dry food. I get as many meat scraps and bones(there is a whole lot of meat and fat left on there) as i want from stubblefield meats 3 miles down the road,i have contact in the restaurant industry that gives me as many loaves of whit bread that goes out of date as i can handle and fisher feeds across the street has a chicken battery so i get as many cracked or defect eggs as i can fit it my fridge for free,i never have a problem with running out of dog food and the dogs look as good as they ever have.