You might have seen the photos of cows that have a hole on their side.
Image Credit: reddit
In Switzerland this kind of cows are not rare. By the way they are healthy and their physiological function isn’t hurt.
Image Credit: hln.be
During the school excursions the kids can put their hands in the hole, the cow wouldn’t feel anything.
All these is made only for one purpose – to track the health of the cow, monitor and take care of it.
Since the digestive system of the cow doesn’t really work well, any disturbance might bring to the fatal end.
Event a change in nutrition might cause unwanted problems.
These special valves are created to avoid the problems like that.
The valves are putted into the cow when she is still young. It makes the analyze taking process easier.
As well as these holes help pupils and students understand better the organism of the cow.