Hair ball and intestinal concretion
Hair ball
Hair balls are composed of hairs or plant fibers swallowed by
ruminants such as cattle, sheep, and goats. They are observed in the
first stomach and the second stomach of ruminants or rarely in the
stomach and intestine of swine and dogs. Hair balls showing hairs
on their surface are called coarse hair balls and hard smooth hair
balls covered with inorganic salts are called smooth hair balls.
Intestinal concretion
This condition is caused by deposition of inorganic substances
in foreign materials such as small stones, nails, wire, and buttons
contained in stools and is primarily observed in the large intestine,
especially the colon of horse.
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Masanobu Goryo
Address inquiries to the following.
E-Mail:goryo@iwate-u.ac.jp
Department of Veterinary Pathology, Faculty of Agriculture,
Iwate University., Morioka, 020-8550, Japan