Because in the past, the main food of cattle was grass-based plant feed, in order to reduce the cost and improve the slaughter time of cattle, it has been changed to corn-based high starch and high fructose food feed. Man-made changes in animal growth habits will make cows produce a lot of methane and other gases in their stomachs after eating grain feed, which will change the original microbial environment in their stomachs and induce various diseases. Then, in order to reduce the cost, we directly cut a hole in the cow, observe the microbial environment in the cow's stomach through the hole, directly put various antibiotics into the cow's stomach, and directly use this hole to exhaust gas to avoid flatulence.

Open a hole in the cow, which is convenient for observing the gastrointestinal digestion of the cow. This method is common in western countries, such as the United States and France. We all know that cattle are ruminants, and its digestion is divided into two stages: one is to chew the raw materials into the stomach, and after a period of time, ruminate the eaten food before eating. Generally, their stomachs are equipped with four gastric cavities, which is what we often call grass.

Some people may ask, is this cruel? It's not cruel at all. Can better observe the situation in the stomach, whether it is bloating, cows are unwilling to eat when the stomach is bloating, so the milk or beef production of cows will decrease. They will regulate the digestion in the stomach well through this hole. If there is any problem, they should quickly prescribe the right medicine through observation, ensure the health of cows, and let everyone drink healthy milk and eat fresh and healthy beef.

So, you don't have to worry that this hole will be bad for cattle. You can watch the inside of the cow at any time. When there is something wrong with the stomach of cattle, they can add drugs through this hole to balance the gastric acid, which is quite good.

Finally, we look scary, and cows can't feel it, because the operation is general anesthesia. If we don't do it now, we will have to cut it if something goes wrong in the future, which is very troublesome.