Why do cows have portholes?

Why Pierce a Cow? A Surprising Question, a Scientific Answer

At first glance, the idea may seem shocking. However, this practice is  scientifically supervised  and adheres to strict animal welfare standards. Cows equipped with this system are  monitored with constant attention , like high-level athletes whose every vital parameter is monitored.

The goal? To better understand the digestive functions of ruminants, animals capable of transforming plant fibers into nutrients—  just as if we could get energy simply by chewing grass.

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