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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.
The primary difference between ruminants and nonruminants is that ruminants' stomachs have four compartments: rumen—primary site of microbial fermentation; reticulum; omasum—receives chewed cud, and absorbs volatile fatty acids; abomasum—true stomach; The first two chambers are the rumen and the reticulum.
A cannula in a cow's side. A cannulated cow or fistulated cow refers to a cow that has been surgically fitted with a cannula. [1] A cannula acts as a porthole-like device that allows access to the rumen of a cow, to perform research and analysis of the digestive system and to allow veterinarians to transplant rumen contents from one cow to another.
In frothy bloat (primary ruminal tympany), the gas produced by fermentation is trapped within the fermenting material in the rumen, causing a build up of foam which cannot be released by burping. [3] In cattle, the disease may be triggered after an animal eats a large amount of easily fermenting plants, such as legumes , alfalfa , red clover ...
Using this bovine "HapMap", researchers can track the differences between breeds that affect meat and milk yields. [65] Early research focused on Hereford genetic sequences; a wider study mapped a further 4.2% of the cattle genome. [63] Behavioral traits of cattle can be as heritable as some production traits, and often, the two can be related ...
The general dental formula for bovids is 0.0.2-3.3 3.1.3.3. Most members of the family are herbivorous, but most duikers are omnivorous. Like other ruminants, bovids have four-chambered stomachs, which allow them to digest plant material, such as grass, that cannot be used by many other animals.
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The internal mucosa has a honeycomb shape. When looking at the reticulum with ultrasonography it is a crescent-shaped structure with a smooth contour. [2] 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]