What was the purpose of creating zebroids

Zebroids are created by crossing zebra and any breed of equine. The main purpose of creating them is to develop a species that is resistant to diseases such as sleeping sickness and tztze, which are most common in both zebra and equines. Further, they carry genetic traits from both parents and are hostile in terms of benefits such as can run fast like horses and carry huge weight on their back easily. They have been extensively produced in African and Asian countries.