In my diet I include a bone in the morning after their run, usually beef brisket, lamb necks, chicken wings, marrow or chuck bone.
For their daily meals, every few days I put a heap of raw vegies such as carrot, pumpkin, celery, green beans, spinach, anything really, just no onion or potato, in the food processor and mush it all up. It has to be pulverised for the dog to absorb the goodies. I add a bit of fruit as well, apples, bananas, pears usually. I store that in a container in the fridge and mix a couple of heaped desertspoons of that mix with about 3 oz chicken or beef mince each day. Occasionally throw in a small tin of sardines in oil, an egg (shell and all) a couple of times a week, plain fat free yoghurt 2 dsp a week.
So it's different every day really. I also give supplements such as apple cider vinegar, and buy a prepared one from greenpet.com which contains the following goodies
This is a natural food supplement recommended for all dogs and cats. It contains a blend of highly nutritious foods & supplements to help maintain optimum health. Contains vitamins, minerals, enzymes, trace elements and fatty acids. 100% Australian made. Suitable for VEGETARIAN dogs also. Good nutrition is essential for disease prevention. Contains—Flax meal, rice bran, dolomite, kelp, spirulina, green barley powder, nettle, alfalfa, garlic, rosehips & blackstrap molasses.
Probably don't really need too much in the way of supplements if the diet is healthy and varied, but I like to cover all my bases, specially seeing my girl is a breeding bitch.