What modification in commercial large breed puppy formulas promotes controlled skeletal maturation?

Adjusted calcium levels.

The nutritional strategy for large breed puppies, including German Shepherds, centers on promoting slow and steady development rather than rapid weight or height gain. Commercial foods formulated specifically for large breed puppies achieve this by having carefully adjusted calcium levels when compared to formulas designed for smaller breeds. Lowering the relative concentration of calcium helps prevent the puppy from accumulating minerals too quickly, which in turn discourages overly rapid bone elongation. This slower maturation process allows the supporting soft tissues and joints more time to strengthen, thereby significantly reducing the overall risk profile for developing orthopedic issues later in life.