Hole-y Cow! These cows have been given a fistula, a hole directly into
the stomach that scientists can reach into and study to see how certain
foods get digested. Through this kind of work, better food can be
concocted and studies into stomach cancer and other problems can be
conducted. Although it looks inhumane, the cows don’t seem to mind.
Animals can live a surprising amount of time with a permanent hole to
their stomach, especially if it is a surgically made fistula. Nowadays,
agricultural scientists learn about the digestive system of cattle by
putting holes in cows – and the cows stay alive and well. These cows
(fitted with a sealing cover called a “cannula”) each have a hole into
their stomach. Through this hole one can extract food caught mid-stream
through the digestive system. Take a look at this bizarre thing.
Source : http://www.weirdpalace.com
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