Where does “cebrado” come from?

cebrado (Spanish) comes from Spanish cebra, from Old Spanish ezebra, from Vulgar Latin eciferus, from Latin equiferus, from Latin equus, from Proto-Italic ekwos, from Proto-Indo-European h₁éḱwos, from Proto-Indo-European h₁oh₁ḱu- — swift.

cebrado (Spanish): striped