Niu Bao is a kind of stone that grows in the gallbladder of cattle. Generally, when cows eat, they will eat indigestible stones and other indigestible things and leave them in their stomachs. After a long time, they form an oval or semi-circular Niu Bao with a gray or black appearance. Niu Bao can be used as a medicinal material after being taken out of tripe. Slightly fishy, bitter first and then sweet, and powdery when chewing.

First of all, what is Niu Bao Cattle?

1, Niu Bao is a kind of stone growing in the gallbladder of cattle, with smooth surface, different Niu Bao colors and generally higher hardness.

2. Niu Bao is generally oval or semi-circular, with individual irregular blocks, brown, gray, black, dark black or yellow in appearance, slightly shiny, and some surfaces have round-like protrusions.

3. After Niu Bao is cut, the cross section is generally white or tooth white, and there is a concentric annular layer inside. The texture is tight and delicate, and the smell is slightly fishy. The entrance is slightly bitter and sweet after eating.

4. After Niu Bao is taken out, it can be used as traditional Chinese medicine after processing, but it can't be taken casually, and it should be taken according to the doctor's advice.

Second, how did Niu Bao come into being?

1. Things that cows can't digest or mistakenly digest when eating food, such as stones, gravel, clods, etc. Will be stored in the stomach of the cow and cannot be excreted. Over time, stones will form in the stomach of cows. This stone is Niu Bao.

Third, the composition and function of bovine stomach

1, rumen: it accounts for 80% of the volume of bovine stomach, and it is the largest part of bovine stomach. It is mainly used to digest and store food. After eating, food first enters the rumen.

2, honeycomb stomach: connected with the rumen, in front of the rumen, there is a honeycomb tissue, so it is called honeycomb stomach. The main function is to screen out the foreign bodies attached to the feed eaten by cattle.

3. Double-valve stomach: it is the third stomach of cattle, and there are organized folds on the surface of the stomach body, which plays the role of grinding feed and absorbing water in cattle.

4, abomasum: also known as abomasum, its function is the same as other monogastric animals, with the function of secreting digestive juice, making food wet. The digestive juice secreted by abomasum contains enzymes, which can digest protein, but basically does not digest fat, starch and cellulose.