When does the cow regurgitate? Why regurgitate?

When the cow has finished eating grass or lying down to rest, people will see the cow mouth constantly chewing into food balls, re-swallow, many people do not understand why this is, so when does the cow ruminate? Why are you ruminating?

1. What is rumination?

Ruminant refers to that some animals return semi-digested food from their stomachs to their mouths to chew again after eating for a period of time. When cattle eat forage or lie down to rest, people will see cattle chewing continuously into food balls and swallowing them again. It takes about 1~2 minutes each time. It takes about 6~8 hours to ruminate every day. It can make a large amount of forage thin and soft, and quickly pass through the rumen to the digestive tract behind. In this way, cattle can eat more forage.

2. When does a cow ruminate?

Cattle usually start ruminating 30~60 minutes after stopping feeding, calves appear ruminating about 21~30 days, beef cattle ruminate at night, 7~8 hours a day and night, 70% in winter and 54% in summer, ruminate 10~15 times a day and night, cattle ruminate every time for 24~36 minutes, beef cattle for 40~60 minutes, common cattle in the mouth of a grass ball chewing 48 times, beef cattle for 30~60 times, Coarse and hard straw and withered grass in winter were eaten, and the chewing times increased accordingly.

III. The process of rumination of cattle

Cattle generally eat in a hurry, especially coarse feed, most of which are swallowed into rumen without sufficient chewing. After soaking and softening in rumen for a period of time, the food returns to oral cavity through reverse vomiting. After chewing again, it is mixed with saliva again and swallowed again into rumen. When cattle are sick, overtired and strongly stimulated from outside, rumination behavior can be weakened or completely stopped. Once rumination stops, food remains in rumen. Often due to fermentation produced by the gas can not be discharged, and caused rumen swelling.

4. Why do cattle ruminate

Cow rumination is due to the special setting of cow stomach. The cow stomach is divided into rumen, reticule, abomasum and abomasum. Only abomasum secretes gastric juice. The rumen volume of cattle is 100~300 liters, accounting for about 80% of the four stomach parts. There are a large number of microorganisms in the rumen, including protozoa (mainly ciliates) and bacteria. The rumen itself does not secrete enzymes. All enzymes in the rumen are produced by microorganisms. The fiber in the forage is fermented and decomposed under the action of enzymes produced by these microorganisms, and most of the lower fatty acids formed are absorbed by the rumen wall. The reticular stomach is in front of the rumen, against the diaphragm and liver. The inner wall of the reticular stomach is honeycomb-shaped, and microbial digestion is also carried out in the reticular stomach.

The above is the introduction of the reason and process of rumination of cattle by soil flow net. Rumination is one of the important digestive processes of ruminants such as cattle. By ruminating, the feed is chewed and mixed with saliva to increase the decomposition surface of rumen microorganisms, so as to stabilize the pH value of rumen between 6 and 7, and create good conditions for rumen fermentation and protein metabolism.