Have no idea about what bait. I do think that axis are more closely related to elk than say a whitetail deer. They are mostly grazers like elk (which explains their good eatin') rather than browsers like deer. They herd up more like elk. Even their rut is closer to elk.
Have never baited em, but at times have had luck with different mineral blocks if there are no cattle on the place. Pretty spooky animals, sometimes takes weeks or months for them to hit the blocks, but once they do it can be helpful to keep them in the area. Where we hunt here it is mostly small areas. Helpful to the herd as well, we don't have an abundance of minerals here.