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 ?
Production responses of cows infused with starch at 800 g/d in the rumen, or the abomasum are as listed in Table 4.
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.
A high incidence of displaced abomasums in Welsh dairy herds can be prevented by improved cow management.
rumen is three times the size of the abomasum and is capable of taking
The reticulum and omasum of cattle, sheep, and goats grow in the same way as the stomach as a whole, with great intensity in the postnatal period, but the abomasum grows more quickly, especially in volume, during fetal development.
Although approximately 30% of propionate produced in the rumen may escape into the abomasum and omasum, propionate could be completely metabolized within the post-ruminal tissues (Lobley et al.
Consequently, she goes on to eat even less of a starched up ration with no fibre, she begins to milk, sickens and her flaccid, atonic abomasum slips up past her poorly filled rumen to "twist".
The remaining dietary protein that has escaped microbial digestion flows into the abomasum and then the small intestine or to the post-ruminal tract without change.
Lower serum Ca concentration in the blood can induce the cow to develop the mineral related metabolic disorders involving hypocalcemia, milk fever, mastitis, retain placenta, displaced abomasum, uterine involution and delayed ovulation (Curtis et al.
Therefore, the question of digestion and absorption of RPAAs and RPF in the abomasum requires further study.
The components included internal organs (liver, heart, lungs and trachea, tongue, kidneys, and spleen), emptied and cleaned digestive tract (rumen, reticulum, omasum, abomasum, and small and large intestines), hide, head, feet, and carcass.