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The rumen, also known as a paunch, is the largest stomach compartment in ruminants. [1] The rumen and the reticulum make up the reticulorumen in ruminant animals. [2]The diverse microbial communities in the rumen allows it to serve as the primary site for microbial fermentation of ingested feed, which is often fiber-rich roughage typically indigestible by mammalian digestive systems.
Rumen fermentation produces large amounts of organic acids, thus maintaining the appropriate pH of rumen fluids is a critical factor in rumen fermentation. After digesta passes through the rumen, the omasum absorbs excess fluid so that digestive enzymes and acid in the abomasum are not diluted.
The digestive tract of ruminants contains four major parts: rumen, reticulum, omasum and abomasum. The food with saliva first passes to the rumen for breaking into smaller particles and then moves to the reticulum, where the food is broken into further smaller particles. Any indigestible particles are sent back to the rumen for rechewing.
Tripe refers to cow (beef) stomach, but includes stomach of any ruminant including cattle, sheep, deer, antelope, goat, ox, giraffes, and their relatives. Tripas, the related Spanish word, refers to culinary dishes produced from the small intestines of an animal.
Acute rumen acidosis can lead to death of the animal, and will occur if the animal is allowed to eat a diet with no roughage but high levels of highly digestible starchy concentrate. Some dairy cows in intensive systems of milk production may have sub-acute acidosis because of the high rates of cereals in their diets relative to an insufficient ...
The ruminant digestive system. The omasum, also known as the bible, [1] the fardel, [1] the manyplies [1] and the psalterium, [1] is the third compartment of the stomach in ruminants.
The reticulum is adjacent to the diaphragm, lungs, abomasum, rumen and liver. The heights of the reticular crests and depth of the structures vary across ruminant animal species. [3] Grazing ruminants have higher crests than browsers. However, general reticulum size is fairly constant across ruminants of differing body size and feeding type.
Being ruminants, the stomach is composed of four chambers: the rumen (80%), the omasum, the reticulum, and the abomasum. The ciliates and bacteria of the rumen ferment the complex cellulose into simpler fatty acids , which are then absorbed through the rumen wall.