Hi,
I have the working cockers and only feed raw! I find that when not working 8oz of raw per day is plenty per dog, chicken carcasus /wings are included as food value not an extra. I have an old lady who is 13.5 years, she has been spayed, and at this age is not as active as the others, her daily amount is 6oz raw and is still in good condition.
All of our girls love vegetables both cooked and raw, they also love their fruit too.
Never use pasta or rice!