The digestion process of cattle, how many stomachs does a cow have, and what role do they have

Cattle have a total of four stomachs, which are rumen, reticulum, valve, and wrinkled.

The rumen is responsible for stirring and grinding the food in the stomach to make it easier to digest. The net stomach is responsible for intercepting heavy objects mixed with the food, and the valve stomach is responsible for further grinding the food; The stomach is responsible for secreting stomach acid and digestive enzymes to digest food.

<>1, cattle do not have incisors, but there are tooth pads, cattle in the feeding tongue to roll the roughage into the mouth, swallow without careful chewing, swallow the food into the rumen after swallowing, the cow will feel safe or free time will be the rumen in the undigested food regurgitation back into the mouth, and then chew carefully, swallow until the food is digested. 2. Cattle have 4 stomachs, namely rumen, net stomach, valve stomach, and wrinkled stomach. The rumen is located on the left side of the abdominal cavity of the cattle, the mesh stomach is located in the front of the rumen of the cattle, the valve stomach is located on the right side of the anterior abdominal cavity of the cattle, and the wrinkled stomach is located at the bottom of the right side of the abdomen of the cattle.

1. The digestion process of cattle

1. Cattle do not have upper incisors, but there are tooth pads, and cattle use their tongues to roll roughage into their mouths when feeding. The feeding rate at this time is very fast, and the cattle swallow the feed before chewing carefully.

2. After the feed is swallowed by the cow into the rumen, the cow will vomit the undigested food in the rumen back into the mouth when it feels safe or free time, and then chew carefully and swallow it until the food is digested.

Second, cattle have several stomachs

Cattle have 4 stomachs, which are rumen, reticulum, valve, and wrinkled. The rumen is located on the left side of the abdominal cavity of the cow, the reticulum stomach is also called the honeycomb stomach, which is located in the front of the rumen of the cow, the valve stomach is located on the right side of the front of the abdominal cavity of the cow, and the wrinkled stomach is located at the bottom of the right side of the abdomen of the cow.

3. What are the functions of several stomachs of cattle?

1. Rumen. 1) The rumen of cattle is large and can store a lot of things, mainly for the fermentation of stored feed and microorganisms. Cattle are herbivores, grass is difficult to digest, and cattle will store food in the rumen after swallowing.

The rumen can support different types of feed for different fermentations, which are then absorbed by the rumen wall.

2) Note that the rumen will produce carbon dioxide, methane, ammonia, hydrogen and other gases during the fermentation process, and if these gases cannot be discharged smoothly from the respiratory tract, it will cause rumenal flatulence in cattle. When the cattle have rumen, the pellet feed should be stopped and the cattle should be punctured and deflated.

2. Net stomach. The reticulum and the rumen are not completely separated, and the reticulum has a honeycomb-like tissue that looks like a sieve, and the hard objects that the cow eats and cannot digest will be stored in the reticulum stomach.

3. Valve stomach. The feed after the cow chews will enter the valve stomach, which absorbs the water contained in the feed and squeezes the ground feed, grinds the feed more finely, and transports the ground food to the stomach.

4. Wrinkle the stomach. The function of the stomach is to secrete digestive juices to make food more moist, and the stomach contains enzymes that can digest some proteins, but cannot digest fats and fiber. The food digested by the stomach is watery, and what cannot be digested is excreted from the body.

The stomach of a cow is made up of 4 gastric chambers, namely the rumen, the hive, the double flap, and the wrinkled stomach. Food flows through these four stomach chambers in sequence, and some of them return to the mouth before entering the double stomach before being chewed, a process called "rumination". The characteristics and functions of its stomach are as follows:

1. Rumen: The rumen volume of adult cows can reach 151 liters and can store 136 kg of contents. It can temporarily store feed and microbial fermentation.

2. Honeycomb stomach: The honeycomb stomach is located in the front part of the rumen, in fact, the two stomachs are not completely separated, so the feed pellets can move freely between the two. The endothelium of the hive stomach has a honeycomb-like tissue, so it is commonly known as the hive stomach.

The main function of the hive stomach is to act like a sieve, and the heavy objects such as nails and wires that are eaten into the feed are stored in it.

3. Double stomach with double flaps: The double stomach is the third stomach, and its inner surface is arranged with tissue-like folds. The effect of the double stomach is not well understood, and it is generally believed that its main function is to absorb water in the feed and squeeze and grind the feed.

4. Wrinkled stomach: The wrinkled stomach of cattle is also called true stomach. Its function is the same as that of the stomach of a monogastric animal, secreting digestive juices and making chyme wet.

The digestive juices of the true stomach contain enzymes that digest some proteins, and basically do not digest fats, fibers, or starches. The feed leaves the true stomach in a watery form and then reaches the small intestine for further digestion. The undigested material is excreted from the body through the large intestine.

Breeds of cattle:

Nanyang Cattle, Jinnan Cattle, Yanbian Cattle, Qinchuan Cattle, Qinghai Yak, Luxi Cattle, Angus Cattle, Belgian Blue Cattle, Limousin Cattle, Pixunt Cattle, Oblac Cattle, Charolais Cattle, Indian Zebu, Brahman Cattle, Gasconi Cattle, Australian Wagyu Beef, Chian Nina Cattle, Canadian Cattle, Iwate Shorthorn Wagyu Cattle, Tianzhu White Yak, Korean Cattle, Musk Cattle, African Buffalo, American Bison, European Bison, Indian Bison, etc.

Four-stomach assisted cattle.

The Chinese have always regarded the cow as a symbol of hardship and hard work. There is a folk proverb that "the ox ploughs the field, and the horse eats the grass", and Mr. Lu Xun compares himself to an ox, "what eats grass and milks milk". Cattle have a characteristic that they can spit out the forage they have eaten back into their mouths and chew it again, and they are called ruminants in zoology.

Rumination is a curiously complex form of digestion. Cattle have four stomachs, and when they eat grass, they swallow the rumen without chewing, then enter the net stomach, vomit back into the mouth when resting, chew again, mix with saliva, and then swallow the human valve stomach or wrinkled stomach to complete the whole digestion process.

Cattle have a total of four stomachs, which are rumen, reticulum, valve, and wrinkled.

The rumen is responsible for stirring and grinding the food in the stomach to make it easier to digest.

Net stomach: It is responsible for intercepting heavy objects mixed with food.

Valve stomach: responsible for further grinding food.

The stomach is responsible for secreting stomach acid and digestive enzymes to digest food.

1. What are the functions of how many stomachs there are in cows?

1. The number of cow stomachs.

Cattle have a total of 4 stomachs, namely rumen, net stomach, valve stomach, and wrinkled stomach.

2. Function. 1) Rumen: The stomach wall muscles of the rumen are strong and powerful, and through continuous contraction and relaxation, the food in the stomach is stirred and kneaded, making it easier to digest; In addition, 70-80% of the digestible dry matter and more than 50% of the crude cellulose in the feed are digested in the rumen, and eventually volatile fatty acids, carbon dioxide and hydrogen are produced to synthesize proteins, B vitamins and vitamin K. The rumen epithelium can also effectively absorb sodium , potassium, chloride and other ions.

2) Net stomach: The net stomach communicates with the rumen, and is mainly responsible for filtering out heavy objects (such as nails and wires) that are accidentally eaten during eating.

3) Flap stomach: The main function is to continue grinding the rough part of the food passed by the net stomach, and then transport the thinner part to the wrinkled stomach, while absorbing a lot of water and acid.

4) Stomach wrinkle: This stomach is the real stomach of cattle, which can secrete gastric acid and digestive enzymes to digest the protein and fat in the food. It should be noted that after the microorganisms parasitic in the rumen and reticulum enter the rumen stomach, they will also be digested into protein by the stomach to provide nutrients for the growth of cattle.

2. What is the phenomenon when cattle eat?

1. Cattle eat with rumination.

2. After the food is eaten by the cow, it enters the rumen. After soaking and softening in the rumen, some food is returned to the mouth after regurgitation, then chewed, mixed with saliva and re-entered the rumen; Some food also enters the net stomach through the rumen, and then returns to the mouth from the net stomach.

3. This process will be repeated until the food is thoroughly chewed, and then the food will pass from the rumen through the mesh stomach into the valve stomach, and further grind to make the food more fine (in the process, the valve stomach will also absorb a part of the water and lower fatty acids). Eventually, the food is delivered to the stomach, which secretes gastric acid and digestive enzymes to digest the food.

The digestive characteristics of cattle are: to regulate the digestive metabolism of the rumen through rumination. After the cattle have ingested the feed, after preliminary chewing, mixed with a large amount of alkaline saliva (left and right), it forms a food ball, which is swallowed into the rumen and soaked and softened.

Rumination is generally started 30 to 60 minutes after feeding, and each rumination lasts 40 to 50 minutes, followed by an interval before the next rumination. Generally, 6 8 times a day and night, a cow can spend up to 6 8 hours of rumination per day and night, and the saliva secreted per day and night is about 100 200 liters, and high-yielding dairy cows even exceed about 250 liters. The volume of the cow's stomach is very large and is divided into four chambers.

The first three chambers (rumen, reticulum, and valve) have no digestive glands in the stomach wall, and the fourth chamber (wrinkled stomach) is the true stomach that can secrete gastric juice. The total capacity of the stomach varies depending on age and breed. In general, the total capacity of the stomach of adult dairy cows can reach up to 250 liters, and the total capacity of beef cattle or service cattle is only about 100 liters.

The rumen is the largest among the four stomachs, accounting for 78% to 85% of the total capacity of the whole stomach, which has the function of storing, processing and fermenting a large amount of food, and is a large, highly automated "feed fermenter" in the living body. In particular, the rumen of cattle contains a large number of ciliated protozoa and microorganisms that are beneficial to the cattle body, which can help digest the cellulose in the feed, and can also use non-protein nitrogenous substances to synthesize proteins and amino acids.

In the cow's stomach, the stomach that plays a role in chemical digestion is (pure finch land) aRumen. b.Net years and stomach.

c.Flap stomach. d.Abomasum.

Correct answer: Stomach wrinkle.