found a website about raw feeding for boxers.
http://www.rawboxers.com/
here is a sample menu they gave for an adult dog...
Please note: Your boxer is an individual and his diet may need some adjustments to bring him optimum health.
Day One
AM Raw meaty bones (chicken)
PM Raw meaty bones (chicken)
Day Two
AM 2 - 4 cups of veggies with yogurt or cottage cheese, or tripe
PM 2 - 4 cups of veggies with yogurt or cottage cheese
Day Three
AM Raw meaty bones (chicken)
PM Raw meaty bones (chicken)
Day Four
AM Organ meat meal (approx 1 - 3 cups)*
PM Organ meat meal (approx 1 - 3 cups)*
Day Five
AM Raw meaty bones (chicken)
PM Raw meaty bones (chicken)
Day Six
AM Frozen fish (sardines or mackerel) or tripe
PM 2 - 4 cups of veggies with canned fish
Day Seven
This is an optional day for variety or lazy Sundays.

Beef or bison recreational bones
Beef or bison muscle meat (for thinner dogs)
Tripe
Eggs
Soaked oatmeal with yogurt
or just a additional day of the regular organ meat or a veggie meal