I just started feeding raw myself, so I can understand your confusion. I have read about putting a little parmason cheese on raw food to add excitment. Maybe you could pure a little no sodium chicken broth on it to add flavor? If that doesn't work I will try to think of something else.
Is your puppy teething? That could explain why he or she prefers the bony pieces.
And there are a couple of stickies at the top of the food forum, that really helped me get started. One has a list great websites that explain raw feeding. The other gives a list of menus that raw feeders on the forum feed their dogs. It will give you great ideas for the future.
