Enzootic Abortion of Ewes (Chlamydial Ovine Abortion, EAE)

In previous issues of Vet’s Corner, we have discussed ovine abortion and campylobacteriosis (vibrionic abortion of ewes).  The following article references another common cause of ovine abortion, chlamydial ovine abortion, or more commonly
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Diagnosing Ovine Abortion

As we discussed in an earlier issue of Vet’s Corner (September 2001), abortion in ewes has many causes including infectious, toxic, genetic, nutritional, and environmental.  In many cases, the actual cause may have occurred days, weeks,
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Ovine Abortion

Abortion in ewes has many causes. Some are infectious like enzootic abortion of ewes (EAE)/chlamydiosis (Chlamydia psittaci), vibriosis/campylobacteriosis (Campylobactre fetus), brucellosis (Brucella spp.), toxoplasmosis (Toxoplasma gondii), listeriosis (Listeria monocytogenes), and salmonellosis (Salmonellaspp.). Others are toxic like hellebores (Veratrum spp.), kale (Brassica spp.), locoweed (Oxytropis spp.), poison/milk vetch (Astragalus spp.), broomweed (Gutierrezia microcephala), coumarins (rat poison, moldy grass or sweet clover), and mycotoxins (usually those that mimic the hormone estrogen). Still other diseases and toxic plants can cause abortions under certain conditions. Malnutrition, abrupt nutritional changes, and heat stress have been implicated and several more causes are currently under investigation.
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