In part ...here is what I found out on line......
[COLOR="Green"]If we have a one pound bone (and all the water is vacuumed out) and we feed it to our dog for its wonderful nutritional benefits, where are those benefits coming from? If 70% of the bone is minerals and only 30% of that one pound is composed of poorly digested collagen, where is all this purported nutritional reward? There are no vitamins, no Omega Fatty Acids in BONE, no digestive enzymes, and only scant amounts of poorly digestible amino acids locked up in the collagen. Even if stomach acids could leach out all the collagen locked up in the bone fragments the collagen would yield minimal nutritional value.
Finely ground bone is a good source of Calcium and Phosphorus. Finely ground bone presents no risk whatsoever to the canine or feline digestive tract. Rather than feeding whole raw bones to dogs based on the erroneous notion that those whole bones provide outstanding nutritional benefits, we are much more accurate in asserting that whole raw bones provide a good balance of Calcium and Phosphorus for dogs... and that's about it! (For chewing exercise why not use a hard Rawhide Bone that softens if ingested?)
Other than being a great source of Calcium and Phosphorus, the chemical composition of raw bones is such that minimal nutritional benefits are obtained from their ingestion. Marrow does have some nutritional value but is composed mainly of fat.
Elliot may get away with it this time...or he may vomit it up....if it is two rich for his system since it is out of his ordinary daily diet.
If it were me...I would give him some of his dry kibble that he is use to eating to absorb some of it.
If he has a loose poop or running poop later or tomorrow...I would seek the advice of a vet...otherwise he just may get away with it.
Not to worry....at this point....but ...no more bone marrow until an okay from your Vet.
Prayers and hugs coming your way from......
Nikeann07