The Visual Guide to
Bovine Reproduction
Abortion: Noninfectious Causes

Early Embryonic Death.
Unicornual twins at 5 weeks of gestation. Early embryonic death and degeneration of the conceptus at the base of the left uterine horn.
Drost M (1969)

Fetal Resorption.
Fetal resorption of a multiple pregnancy. Dry fetal membranes extending partially into the nongravid horn. Cow came into estrus.
Roberts SJ (1973)