How many hairs does a cow have?

No one has studied how many hairs a cow has. But there is an idiom called nine Niu Yi hairs.

After food is swallowed, it will undergo a fermentation process here, so that indigestible organic substances such as cellulose are decomposed and absorbed by rumen. The gas produced by fermentation is discharged by burping. Some food in the rumen will re-enter the mouth through the contraction of the rumen, and will be swallowed again after further chewing. After that, food will creep between the reticulum and rumen.

So as to mix and grind, and a small amount of food will return to the mouth again after this process. Double-flap stomach will absorb the water in pulp and avoid diluting gastric acid. Eventually, protein and fat in food will be digested by enzymes in abomasum. The rumen of adult cattle accounts for 80% of the whole stomach volume.

Morphological characteristics:

Cows are strong animals, and both sexes have horns. There are 5 genera. Most of them are giant herbivores. These include African buffalo and American bison, yellow cattle, buffalo, yak and so on, which are very important to human beings. They are strong and not good at running. The neck, shoulders or back often have protrusions supported by the spinal dorsal spine, which are muscular; There are four toes on the foot, but the lateral toe is worse than the deer.

Cows have four stomachs, namely rumen, reticulum, double-valve stomach (commonly known as tripe) and abomasum. These four stomachs actually overlap each other, but are not connected in sequence. Only the last abomasum secretes gastric acid to digest food, while the first three stomachs are rich in bacteria and protozoa. There are a lot of microorganisms living in rumen.