Presumably ox-heads have also the same significance than complete oxen1. These flat back glazed compositions date mainly from the New Kingdom
White and dark glaze
W 2.1, H 2.0 Undated
© 2022 Musée du Louvre/
Antiquités égyptiennes #N 4880
Yellow glaze W 1.8
New Kingdom © 2013
Musée du Louvre/
Antiquités égyptiennes #E 23842
Blue glaze W 1.6
New Kingdom © 2013
Musée du Louvre/Antiquités
égyptiennes #E 23839
References
1Andrews C. Amulets of Ancient Egypt, 1994, p. 91