Atresia ani is a rare congenital condition in which a foal is born without an anus. It also may cause part or all of the rectum to be missing. This condition can vary in severity. Surgery is the only option for foals born with this condition and the outcome depends on how badly the foal’s gastrointestinal tract is affected.
Symptoms and Types
Foals with this condition display signs such as:
- Colic-like symptoms (e.g., abdominal pain)
- Straining to pass a bowel movement
- Swelling of space where anus should be (if rectum intact)
Although this condition is congenital, meaning present at birth, it has not yet been linked to hereditary genetics. Mutagens in the environment during prenatal development could also be a cause.
A veterinarian can easily diagnose atresia ani. If the rectum or anus is missing, in whole or part, that is a surefire indicator of the diagnosis. Your veterinarian will make a thorough inspection of your horse’s body, and will prescribe immediate treatment for this problem.
Anything occurring before birth
The very end of the large intestine
A ring-shaped muscle that is used to close and open an opening
Denotes an animal that is still able to reproduce or is free of cuts and scrapes
The digestive tract containing the stomach and intestine
The absence of a body opening that would normally be there; the absence of a certain organ that is tubular in structure.
Inducing death on an animal or putting them to sleep
The end of the gastrointestinal tract; the opening at the end of the tract.
The study of the laws of inheritance n living things; may also be referred to as breeding