abomasum


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abomasum

(ăb′ō-mā′səm)
n. pl. aboma·sa (-sə)
The fourth division of the stomach in ruminant animals, such as cows, sheep, and deer, in which digestion takes place.

ab′o·ma′sal (-səl) adj.

abomasum

The 4th and last stomach of ruminants—e.g., cattle, deer, goats—which is suspended by the greater and lesser omenta. It is a source of rennin, as well as rennet, a rennin-containing enzyme preparation used to make cheese.

abomasum

the true digestive part of the RUMINANT STOMACH, secreting enzymes for the digestion of food prior to passing it on to the small intestine. The abomasum is HOMOLOGOUS with the monogastric stomach of non-ruminants.

abomasum

the fourth compartment of the ruminant stomach. It is an elongated sac, comparable in structure and function to the stomach of nonruminants. It lies in the right half of the abdominal cavity, largely on the abdominal floor, except in late pregnancy when it is pushed cranially by the enlarging uterus and may also be lifted from the abdominal floor. See also abomasal.
References in periodicals archive ?
These researchers [36,37,14] reported that recognition of a target level for NEFA and [beta]HBA are difficult, because of variation between animals; however, critical threshold for metabolic disorders such as displaced abomasums, clinical ketosis, metritis or retained fetal membranes are 0.
The true stomach of ruminant animals is called the abomasum.
contortus (Rudolphi, 1803) Abomasum, Bos taurus (M), Sabanilla de Montes de Oca, San Jose and Capra hircus (M), Turrialba, Cartago (Brenes-Madrigal 1961).
With roughage diets only small quantities of alpha-linked glucose polymers pass to the abomasums (Heald, 1951) and it is very likely that such material, which does leave the rumen, is mostly of microbial origin.
ABOMASUM The fourth stomach is a true stomach, and it works basically the same way your stomach does.
Once ingested, parasite larvae quickly find their way into the host's abomasum, or true stomach.
We don't experience problems with acetonemia, displaced abomasum, and slow recovery of sick animals which plagued us 40 years ago.
For the morphometric assessment of the digestive tract, the abdominal cavity was opened and removed separately for the four compartments of rumen-reticulum, omasum, and abomasum.
2013): the weight of the carcass, bone, green hide, head, front hooves, hind hooves, furs, rumen, reticulum, abomasum, omasum, heart, liver, kidney, lung and weasand, pizzle, testes, gonad fat, spleen, and oxtail; carcass yield; kidney fat; degree of marbling; meat color score, fat color score; fatty acid composition content; carcass length; carcass depth; hind leg circumference; hind leg width; thigh meat thickness; thorax depth; thickness of the loin; hind leg length; thickness of fat coverage; pH of the fresh carcass; and pH of beef.
They were considered as non-carcass components: heart, liver, kidneys, rumen, reticulum, omasum, abomasum, small intestine, large intestine, blood and skin.
The part of abomasum is usually herniated in umbilical hernia in calves but record of umbilical-abomasal fistula in cow calf is rare (Fubini and Ducharme, 2004).