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Topic: Abomasum

	G7701 Displaced Abomasum, MU Extension
		The abomasum is the fourth, or "true," stomach in the cow.
		Adjacent to the abomasum, on the left side of the abdomen, is the large first stomach, or rumen (Figure 2).
		The abomasum occasionally may be displaced to the left of the rumen and upwards when its muscular wall loses tone and the stomach becomes filled with gas.
	extension.missouri.edu /explore/agguides/pests/g07701.htm (712 words)

	Metabolic Diseases of Dairy Cattle - Displaced Abomasum
		Displaced abomasum (DA) is a repositioning of the abomasum (the fourth or true stomach) from its normal position on the right ventral abdominal wall.
		The abomasum becomes dilated with fluid and/or gas with subsequent migration to an abnormal position on the right or left side.
		Distention of the abomasum is caused primarily by gas and may be accompanied by an accumulation of fluid within the organ.
	edis.ifas.ufl.edu /DS088 (749 words)

	G7701 Displaced Abomasum, MU Extension
		The abomasum is the fourth, or "true," stomach in the cow.
		Adjacent to the abomasum, on the left side of the abdomen, is the large first stomach, or rumen (Figure 2).
		The abomasum occasionally may be displaced to the left of the rumen and upwards when its muscular wall loses tone and the stomach becomes filled with gas.
	muextension.missouri.edu /explore/agguides/pests/g07701.htm (712 words)

	Abomasum - LoveToKnow 1911 (Site not responding. Last check: 2007-10-29)
		ABOMASUM (caillette), the fourth or rennet stomach of Ruminantia.
		From the omasum the food is finally deposited in the abomasum, a cavity considerably larger than either the second or third stomach, although less than the first.
		The base of the abomasum is turned to the omasum.
	www.1911encyclopedia.org /Abomasum (93 words)

	The Incredibly Complicated Cow - Dandy Designs - Does God Exist? - JanFeb04
		At birth, there is a structure (called an esophageal groove) in the reticulum of the calf which conveys milk directly to the omasum and abomasum, bypassing the rumen and reticulum.
		In this way, the calf can swallow milk that goes to the abomasum where it is digested by enzymes secreted by the calf, then a moment later swallow a bite of hay that goes to the rumen.
		For example, antibodies (proteins which are in colostrum, the first mammary secretion produced by the cow after the calf is born) can pass through the abomasum intact and be absorbed in the small intestine to provide immunity to the newborn calf.
	www.doesgodexist.org /JanFeb04/TheIncrediblyComplicatedCow.html (1255 words)

	Selected Highlights
		The genera Ostertagia and Teladorsagia consist of nematodes that parasitize the abomasum of a variety of ruminants.
		The worms cause profound pathologic changes in the mucosa of the abomasum which interferes with secretion of hydrochloric acid and pepsinogen, the precursor of pepsin, an important enzyme in the digestive process.
		Die wurm veroorsaak uitgesproke letsels in die wand van die abomasum en dit beïnvloed die afskeiding van soutsuur en pepsinogeen, die voorloper van pepsien, wat ‘n belangrike spysverteringsensiem is. Soutsuur veskaf die suur omgewing wat noodsaaklik is vir die omskakeling van pepsinogeen na pepsien.
	www.research.up.ac.za /2003/Faculties/Veterinary/VETT/highlight.html (1057 words)

	R. Bras. Zootec. vol.32 no.6; Abstract: S1516-35982003000600021 (Site not responding. Last check: 2007-10-29)
		An increase of the capacity of all the stomachs compartments was verified with the progress of the age of the calves, but with growth rates differentiated among the compartments.
		The increase of the reticulo-rumen growth and the decrease of the abomasum growth with increase of age were observed.
		Up to 50 days of age the proportion of the reticulo-rumen and abomasum stomach compartments was changed, but the omasum maintained a constant rhythm of development.
	www.scielo.br /scielo.php?script=sci_abstract&pid=S1516-35982003000600021&lng=en&nrm=iso&tlng=en (190 words)

	Displaced Abomasum in the Goat
		During that process, the abomasum may slip to the left and become pinned under the weight of the rumen.
		This causes the opening of the abomasum, the pylorus, to be pinched off, and the doe begins experiencing metabolic problems.
		Displaced abomasum is more common in does that have carried three or more fetuses, because there is more opportunity for shifting organs once the uterus is empty.
	kinne.net /displ-ab.htm (1117 words)

	Breeds of Cattle at CATTLE TODAY
		They are named the rumen, reticulum, omasum, and abomasum.
		The rumen is the largest compartment and is like a fermentation tank, providing the anaerobic environment, constant temperature and pH, and constant mixing that allows microbes to break down the cellulolse.
		The reticulum, known as the "Honeycomb", is is the smallest compartment.
	cattle-today.com (559 words)

	Altering the Faty Acid Composition of Milk Fat by Diet (Illini DairyNet) (Site not responding. Last check: 2007-10-29)
		The objective of this experiment was to determine the potential to increase the content of monounsaturated fatty acids in milk fat by infusing different amounts of two fatty acid mixtures rich in the monounsaturated fatty acid oleic acid (derived from high-oleic sunflower or canola).
		The fatty acid mixtures were infused for 3 days at each of four amounts in a sequence of 0,.3,.6,.9,.6,.3, and O pounds/day (a total of 21 days for each fatty acid mixture); cows then were changed to the opposite fatty acid mixture, and the infusion sequence was repeated.
		Short- and medium-chain saturated fatty acids are synthesized by the mammary gland and the infusion of free fatty acids into the abomasum inhibited normal fatty acid synthesis in the mammary gland, which effectively decreased the amount of saturated fatty acids in milk fat.
	www.livestocktrail.uiuc.edu /dairynet/paperDisplay.cfm?ContentID=286 (943 words)

	Case: Displaced Abomasum
		The abomasum is the fourth stomach of the cow, which is similar to ours.
		The cow was cast and rolled but to ensure the abomasum stayed where it should, two small holes were made and a stitch was placed through the skin and abomasal wall.
		One displaced abomasum on a farm prompts us to work urgently with the farmer and farm nutritionalist to prevent further cases.
	www.highgate-vets.co.uk /farm/cases/cattle/displaced-abomasum.htm (445 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal (Site not responding. Last check: 2007-10-29)
		The degraded fibre, which is now in the lower liquid part of the rumen-reticulum, then passes into the next chamber, the omasum, where water and many of the inorganic mineral elements are absorbed into the blood stream.
		After this the digesta is moved to the last chamber, the abomasum.
		The food in the abomasum is digested much like it would be in a simple-stomached monogastric animal (such as a human or pig).
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=ruminants (415 words)

	Feeding the Dairy Herd
		The abomasum is comparable to the stomach of the non-ruminant.
		Feed protein (that escapes breakdown in the rumen) and microbial protein pass to the abomasum and small intestine for digestion and absorption.
		In contrast to the mature cow, in the calf, the abomasum is the largest compartment of the stomach (table 1).
	www.extension.umn.edu /distribution/livestocksystems/components/DI0469-02.html (1584 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal (Site not responding. Last check: 2007-10-29)
		The abomasum is the fourth and final stomach compartment in ruminants.
		If the abomasum displaces to the right, it is at risk of torsion and becoming a right torsioned abomasum (RTA).
		The word abomasum is from Modern Latin and it was first used in English in 1706.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=Abomasum (224 words)

	Calf Health And Nutrition
		At birth, the abomasum is the dominant structure while the rumen is basically non functional.
		The abomasum of an affected calf usually becomes grossly distended within 1hour after feeding with death occurring within a few minutes after the distention becomes clinically obvious.
		At necropsy, the abomasum is grossly distended with gas, fluid and milk or milk replacer.
	www.merricks.com /tech_bloat.htm (2748 words)

	[No title] (Site not responding. Last check: 2007-10-29)
		This physical anatomical disease is caused by entrapment of the abomasum between the rumen and the left side of the cow (Figure 1).
		The normal abomasum position is in the cranial, lower right quadrant of the abdominal cavity (Figures 2 and 3).
		Since abomasum entrapment rarely resolves by itself, surgical intervention is usually necessary.
	www.admani.com /alliancedairy/TechBulletins/DisplacedAbomasum.htm (1061 words)

	4 Post-mortem differential parasite counts
		(a) During the post-mortem examination, ligate the abomasum with string and separate it from omasum and duodenum.
		Open the abomasum along the greater curvature so that its contents fall into the tray: empty the abomasal contents into the total content jar.
		The principle and application of the differential parasite counts of the large intestine are the same as those for parasite counts of the abomasum.
	www.fao.org /Wairdocs/ILRI/x5492E/x5492e06.htm (2249 words)

	Cattle Today: RUMEN DEVELOPMENT AND FUNCTION IN BEEF CATTLE
		The abomasums is often referred to as the “True Stomach” and is very similar to our stomach and that of other monogastrics (animals having only a single stomach system).
		As the feed passes into the abomasum, gastric juices secreted by the abomasum are mixed with the ingesta, producing a material about the same consistency of that in the rumen.
		The ingesta passes rapidly through the abomasum into the lower tract, where digestion is completed in a similar manner to simple stomached animals.
	www.cattletoday.com /archive/2000/April/Cattle_Today85.shtml (1849 words)

	From Feed to Milk: Part I, Rumen Physiology (Site not responding. Last check: 2007-10-29)
		The fourth compartment is the abomasum or "true stomach," where acids and enzymes further digest the cow's digesta.
		The time that digesta remains in the abomasum is very short compared to the retention time of feeds in the rumen.
		Digesta flowing from the abomasum to the small intestines is composed of small particles suspended in liquid digesta.
	animsci.agrenv.mcgill.ca /courses/450/extra/feed_to_milk/rumen.html (944 words)

	Nutritional Scours in Milk-fed Calves: Causes and Treatment
		The initial digestion of milk occurs in the abomasum (or fourth stomach) and this progresses further in the intestines.
		Digestion in the abomasum requires an acidic environment which kills most pathogens present, yet also encourages the growth of bacteria (Lactobacilli) that assist in digestion of the milk protein.
		Without the protective acidic environment in the abomasum, calves would quickly become infected when they first suckle from the cow's udder, which is usually contaminated with some faeces, or from other pathogens they may consume in the process of eating or chewing on things in the calf shed or paddock.
	www.dpi.vic.gov.au /dpi/nreninf.nsf/LinkView/D27D0C2A28D5E0F8CA256BCF000BBFEA323F5CFE0267D9674A256DEA00273B5A (2626 words)

	2. Tutorial (Site not responding. Last check: 2007-10-29)
		Ventrally it is related to the lesser curvature of the abomasum and abdominal floor (not in small ruminants).
		The pattern of lymphatic drainage near the aortic bifurcation is similar to the dog and comprises, iliac, deep inguinal and lumbar nodes.
		Pathological displacement of the abomasum to the right is accentuated by gaseous distension of the organ (which consequentially rises).
	d-mis-web.ana.bris.ac.uk /calnet/vetAB10/page2.htm (1636 words)

	Vol.12 - 6. Cattle feeding and rearing
		Their stomachs are divided into four compartments - rumen, reticulum, omasum and abomasum - of which the rumen is the largest.
		Beyond the abomasum are the small and the large intestines.
		This microbial protein and the 'escaped' or undegraded protein are digested by enzymes in the abomasum and the small intestine.
	www.bseinquiry.gov.uk /report/volume12/chapte62.htm (374 words)

	2474-Section4-Reading 1
		The abomasum's function is to begin chemical digestion of digesta not degraded in the rumen.
		The enzyme, renin, is secreted in the abomasum and aids in the digestion of milk by clotting milk protein in the abomasum, causing a slower release of milk into the small intestine.
		As the protein enters the abomasum and small intestine, it is enzymatically digested to amino acids which are absorbed in the small intestine.
	www.dasc.vt.edu /courses/dasc2474/4r1rumdig.htm (2724 words)

	Nutrition and Feeding of the Cow-Calf Herd: Digestive System of the Cow
		It functions as the gateway to the abomasum, filtering large particles back to the reticulorumen and allowing fine particles and fluid to be passed to the abomasum.
		The abomasum is also known as the "true stomach." It functions much like the human stomach producing acid and some enzymes to start protein digestion.
		Although displaced abomasum is more common in dairy cattle than beef cattle, producers should be aware of the possibility of this problem in cattle that have had severe digestive upsets.
	www.ext.vt.edu /pubs/beef/400-010/400-010.html (1814 words)

	Home-Ostertagia In Cattle
		Eggs from mature females in the abomasum (fourth stomach) are passed in the dung.
		The lining of the abomasum is significantly damaged when the larvae emerge as immature adult worms.
		In the foreseeable future, treating the inhibited larvae in the wall of the abomasum is likely to remain more of a problem than drench resistance.
	www.petalia.com.au /templates/storytemplate_process.cfm?specie=Beef&story_no=1825 (1454 words)

	DA (Site not responding. Last check: 2007-10-29)
		The abomasum is the cow’s true (fourth) stomach, located near the floor of the abdominal cavity on the right side, below the omasum.
		It occurs when the abomasum moves to the left of its normal position, becoming trapped between the rumen and the left abdominal wall.
		Although rolling a cow over on her back or running her up a steep hill may correct some mild cases, surgery is commonly required: the abomasum is repositioned and anchored in place with sutures.
	www.westerndairyscience.com /html/DairyNotes/html/a1c2h1d1.html (318 words)

	Carnitine for Lactating Dairy Cows (Illini DairyNet) (Site not responding. Last check: 2007-10-29)
		Six grams of carnitine was dissolved in 4 liters of water and infused continuously into the abomasum over a 22-hour period each day.
		This was accomplished by placing a flexible tube through the rumen cannula, through the ruminal-omasal orifice, and into the abomasum.
		Consequently, in Experiment 3 we chose to infuse increasing doses of carnitine into the abomasum to attempt to repeat the changes observed with abomasal carnitine infusion in Experiment 1.
	www.livestocktrail.uiuc.edu /dairynet/paperDisplay.cfm?ContentID=228 (1391 words)

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