Not an expert but don't think there is any benefit to feeding a dog that is on a well balanced diet some bones that have had most of their goodness leached out of them. Your dog would be much happier if you gave it one of the raw marrow bones, perhaps with some of the marrow removed for a delicate tummy
Started Primal June 2012 at 148.5lbs, and 5' 1", reached goal weight in 5 months.
Lowest weight 93lbs - too thin. Now stable at around 100lbs much better weight for me at my age.
Primal, minus eggs, dairy and a myriad of other allergens.