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Digestive System of Cow
4
Digestive System of a Cow
Digestive System of a Cow
The 4 compartments
- A cow has four compartments: the rumen, the reticulum, the omasum and the abomasum.
- The hay and grain the cow eats goes into the first two compartments, the rumen and the reticulum, then the cow regurgitates its food, which is known as "cud", chews it again and swallows the cud which goes to the omasum and to the abomasum and finally out the large intestine.
Pictures
The Rumen
Rumen
-The Rumen is on the left side of the animal and is the largest stomach compartment and has several sacs.
-The Rumen can hold up to 25 gallons of feed depending on the size of the cow.
-The rumen can also act as a storage for feed.
-The Rumen has 2 parts: the top of the Rumen is gas or air and the bottom is liquid. The 2 are seperated by a fiber raft.
-Food gets caught in the fiber raft and bacteria jumps at it and starts to break it down.
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The Reticulum
-The reticulum is a pouch-like structure or organ in the front area of the body, close to the heart.
-The tissues in the reticulum form a network similar to a honeycomb.
-A small tissue fold lies between the reticulum and rumen, but the two aren’t separate compartments. Together they’re called the rumino-reticulum.
-Heavy or dense feed and metal objects eaten by the cow drop into this organ. Nails and other sharp objects may work into the tissue and cause “hardware disease.” You can use magnets to prevent disease or correct the problem through surgery. Leaving it untreated may lead to infection and possibly death.
Reticulum
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The Omasum
-The omasum is the third stomach.
-The omasum is a sphere-shaped structure containing folds of tissue (like pages in a book).
-It absorbs water and other substances from digestive contents.
-Feed material between the folds will be drier than feed materiel found in the other compartments.
Omasum
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The Abomasum
-The abomasum is the only compartment lined with glands.
-These glands release hydrochloric acid and digestive enzymes, which are needed to breakdown feeds.
-The abomasum is similar to our stomach.