Responsible growth means steady growth without spurts or interruptions. Attention to steady growth is essential in a horse’s development from foetus to sport horse.
Unsteady growth spurts (too slow or too fast) are the biggest risk factors for developmental and orthopaedic disorders. Important minerals for muscle and bone development include Ca, P (ratio 1.4-2:1), Cu, Zn, Mg, and Mn.
Always provide sufficient high-quality roughage, preferably at pasture as much as possible. Exercise, after all, is necessary for healthy muscle and bone development.