Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
Cesarean section in the mare may be indicated in pelvic fractures with exostosis, transverse dorsal or transverse rotated bicornual pregnancies and rupture of the prepubic tendon. In these conditions the dam may be sacrificed to save the life of the fetus, as successful cesarean sections are rare in the mare.
"Successful Equine Cesarean Section,"
Iowa State University Veterinarian: Vol. 20
, Article 11.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol20/iss3/11