Marrow bones are the highest of the fat to protein ratios of all the bones. However, they are the cleanest. Live in a carpet filled condo? This this is the bone for you. It can be a meal substitute as well, because calories are calories no matter what them come from. The bones themselves after the marrow is gone will last a good long time. Your dog may treat it as a toy and continue to play with it and chew long after the marrow has been consumed.
In order to understand the nutrition bones provide to pets, it's first necessary to nail down exactly what we're talking about when it comes to bones.
Raw bones contain marrow.
However, marrow isn't bone.
It's comprised primarily of fat and blood components, which are high quality nutrients – just not nutrients provided by the bone itself.
There is also cartilage attached to raw bones.
Cartilage also isn't bone.
It is connective tissue composed of about 50 percent collagen and mucopolysaccharides (chains of glucose molecules combined with mucous).
Collagen is fibrous connective tissue that is poorly digested by pets.
"Bone is about one third organic and two thirds inorganic material. The inorganic matrix of bone has a microcrystalline structure composed principally of calcium phosphate."
So bone is composed primarily of calcium phosphate. Calcium and phosphorus ratios and total amounts in a pet's diet are important. This is especially true for large breed puppies with unique nutritional requirements (0.8 percent calcium and 0.67 percent phosphorus is considered the ideal ratio for these pups).
Bone marrow is also a key component of the lymphatic system, producing the lymphocytes that support the body's immune system.
approximately 1 pound per package.