It appears that DAZ Studio 3D animation software supports Autodesk Kaydara 3D format (.fbx), so you may be able to export .daz files as .fbx files using the default export function. But perhaps other similar programs with support for DAZ and Kaydara formats might be of help as well and help you with daz to fbx conversion.
Open DAZ file Open FBX fileA Mac version of the popular modeling tool