Why do foreigners dig a deep hole in cattle to raise cattle? Won't this cow hurt?

Foreigners raise cattle, dig a deep hole in the cow, observe the physical condition of the cow and judge whether the cow is healthy or not. A large amount of anesthetic is needed during the whole operation, so the cow does not feel pain. When we travel abroad, we will find a big hole in the cow. Many people find this very puzzling, and many farmers agree to do colostomy. Cows in China rarely have such big holes, which are considered to be against the laws of nature. Although it is harmless to the health of dairy cows and can improve their viability, China people still can't accept it.

First, digging a big hole in the cow is a colostomy in the stomach to improve the viability of the cow.

Foreigners do not make fistulas for every cow, but choose cows that live for a long time. Fistula is usually performed in the rumen of cattle, and then a rubber tube is installed. After the cow's wound is healed, it can move freely. The breeder usually takes the food in the cow's stomach out of the rubber tube, observes the digestion of the food and takes preventive measures in advance. However, there are still animal lovers who oppose colostomy and think that the operation is out of the will of the cows, and the cows without colostomy are still alive and well. ?

Second, this operation uses general anesthesia technology, so the cow has no pain?

It takes an anesthetic to make such a big cut from a cow. During the whole process, the cow may feel something pulling on her abdomen or fall into a coma. After waking up, you may feel a substance that does not belong to your body, but after a few days of adaptation, the cow will eat and rest normally. This operation is also to improve the vitality of cattle, not out of malice. Although some people object that colostomy is cruel, it is still very popular abroad.

So, do you know why China doesn't support this operation?