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Retained Placenta in Mares
Retained Placenta in Mares
Introduction
Following birth of the foal, the mare's placenta is usually passed within two hours. If the placenta remains in the uterus longer, bacteria settle in and if enough time passes the uterus becomes septic and endotoxins are produced, picked up and circulated in the mare's bloodstream. This can cause serious illness characterized by depression, fever, shock and founder.
Causes
It is always important to examine the placenta to determine if the whole bag has been expelled. Though uncommon, parts can tear off and be left behind, particularly at the tips of the horn. Retained placentas can occur for no obvious reason but more commonly is associated with early parturition, abortion, caesarian delivery, or difficult birth (dystocia).
Low dietary selenium
may also be responsible in some areas of the country.
Too aggressive a removal of a placenta may also cause some pieces of the placenta to tear from the pain part and remain in the uterus.
Critical Time
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