Atresia
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Atresia ani
- A common congenital defect of the lower gastrointestinal tract.
- Both the anus and rectum can be affected.
- Occurs in all species but is most often seen in calves and pigs.
Atresia coli
- Considered the most common segmental anomaly of the intestine in domestic animals.
- Can affect in particular the spiral colon of Holstein calves and the small colon of foals.
Atresia ilei
- It is less common to see atresia in the small intestine.
- Mostly seen in calves.