Health Bones use real chicken meal versus chicken by-product meal. Chicken meal consists of 69% protein and contains many essential amino acids. Chicken meal provides roughly 4-5 times the nutrients as the same weight of chicken meat because of the differences in moisture.
Its protein content is much higher than regular chicken because most of the water has been removed. So, a pet food comprised of chicken meat may only have 20% of the chicken in the final product, providing only 3.6% protein. An equivalent proportion of chicken meal would provide 13% protein.