Explanation should include

causes of abortion
- poor nutrition
- trauma
- leptospirosis
- equine herpes viruses (EHV-1 and EHV-4), rhinopneumonitis
- placentitis
- equine viral arteritis
- bacterial agents
- twinning in mares
- fescue toxicosis
- pneumovagina
preventions for abortion
- Caslick’s suture
- separation of pregnant mares from non-pregnant horses
- herpes vaccinations at five, seven, and nine months.

Process/Skills Questions:

What is the difference between equine abortion and stillbirth?
What is one cause of twinning in horses?
What is Overo lethal white syndrome?
What vaccinations should be given at five, seven, and nine months of gestation to prevent equine abortion?
How soon should pregnant mares be removed from endophyte-infected fescue prior to parturition?
When should a pregnant mare’s nutritional intake increase?
What risks should be addressed for the personnel handling aborted fetuses?

Teacher Resources: