(n.) The third division of the stomach of ruminants. See Manyplies, and Illust. under Ruminant.
Example Sentences:
(1) One square centimetre samples were taken from equivalent areas in each case of the rumen, reticulum, omasum and abomasum of 38 embalmed Karakul lambs.
(2) One square centimetre samples were taken from analogous areas of the rumen, reticulum, omasum and abomasum of 38 embalmed Karakul lambs.
(3) The effects of starvation on fluid balance seem to become as severe in goats as in monogastric species despite food reservoirs in the reticulo-rumen and omasum at the onset of food deprivation.
(4) Although protozoan concentrations in omasal contents were approximately 80% lower than those in ruminal contents, the omasum harbored relatively high numbers of ciliated protozoa.
(5) The characteristic cyclic motility of the omasum was slightly reduced in sheep fasted for 48 hr and in those fed on pelleted food, and it persisted after vagotomy.3.
(6) The omasum has more than 70 laminae which are papillated on the reticular end.
(7) In vitro pentagastrin (10(-18) to 10(-4) M) stimulated quiescent and intrinsically active longitudinal and circular muscles of the body of the omasum and the body and antrum of the abomasum and potentiated contractile responses of antral muscle to electrical stimulation of intramural cholinergic nerves.
(8) It had no effect upon digesta-free weight of the rumen and omasum but consistently decreased the weight of all post-ruminal segments of the gastrointestinal (GI) tract.
(9) The weight of the omasum and area of the internal laminae appeared to be smaller in Brahman cattle than the buffalo and British cattle.
(10) The Mg infused to either the abomasum or omasum was completely recovered at the duodenum, indicating a lack of net absorption of Mg from these stomach compartments.
(11) Eating was associated with an increase in flow of the fluid and dry matter fractions of digesta passing from the omasum but efflux was unaffected by rumination.
(12) The omasum and reticulum presented desquamation of the cutaneous mucosal membrane, and the abomasum--necrotic foci, edema, and leukocyte infiltrations.
(13) Cell bodies of VIP-IR nerves decreased in number through the omasum, reticulo-omasal orifice, and omasal pillar.
(14) Samples of the following parts of the gastrointestinal tract were collected from 20 slaughter cattle: - oesophagus, reticulum, omasum, rumen, abomasum, duodenum, jejunum, ileum, colon (beginning and end).
(15) Specimens were obtained from the lung, omasum and Peyer's patches of the ileum and corresponding lymph nodes.
(16) Four ruminating bull calves were provided with cannulas in the rumen and abomasum and a sleeve sutured at the omosal-abomasal orifice that permitted digesta flowing from the omasum to be diverted and collected.
(17) Calves were slaughtered, and samples of the contents of the reticulo-rumen, omasum, abomasum, small intestine, cecum, and large intestine were analyzed for chromic oxide, copper, and manganese.
(18) The data concerning the transport of sodium and chloride in the omasum are very limited.
(19) The curves were analysed on the assumption that the stomach of the sheep could be represented as two mixing compartments (reticulo-rumen and abomasum) and a time delay (omasum).
(20) The following activities of GDH and GS were found out in trials with lambs at the age of 10, 20, 30, 40 and 90 days, as to the different parts of digestive tract: in the tissues of rumen, omasum, reticulum, spleen, duodenum, jejunum, ileum, int.
Rumen
Definition:
(n.) The first stomach of ruminants; the paunch; the fardingbag. See Illust. below.
(n.) The cud of a ruminant.
Example Sentences:
(1) Thirty-two strains of pectin-fermenting rumen bacteria were isolated from bovine rumen contents in a rumen fluid medium which contained pectin as the only added energy source.
(2) In trial with adult wethers and weaned lambs the effect of enzymatic preparation Pektofoetidin G3x (mostly pectinase and cellulase) on rumen fermentation was studied.
(3) Microbial fermentation and nutrient degradation in the rumen were reduced by saponins.
(4) Very few receptors were located in the caudal regions of the rumen whereas the cranial sac is richly supplied with tension receptors.
(5) The microbial populations of the rumens of seaweed-fed and pasture-fed Orkney sheep were examined.
(6) Rumen pH decrease to below 5.0 in S2-, lasalocid-, and monensin-treated cattle was not due to lactic acid, but to increased production of volatile fatty acids.
(7) Each of the primary stress selected isolates was tested in synthetic saliva, rumen fluid simulating the activity in the rumen, rumen fluid followed by pepsin-hydrochloric acid treatment simulating the additional effect of ruminal and abomasal activity, pepsin-hydrochloric acid solution simulating conditions in the abomasum and finally in a trypsin solution as an example of enzyme activity in the gut.
(8) In addition, some indices of rumen physiology were determined.
(9) The microflora in strained rumen fluid did not methylate or volatilize 203Hg2+ at detectable rates.
(10) In an experiment with wethers we investigated the effect of complete pelleted feed ration on the concentration of volatile fatty acids in the rumen and intestinal tract.
(11) F100 cells were able to grow in vitro in whole rumen contents in the presence of an added utilizable substrate such as sorbitol, but addition of sorbitol to the rumen failed to enhance survival in vivo.
(12) Consumption of alfalfa hay resulted in the highest total viable counts of rumen bacteria but a lower proportion of fibrolytic counts than seen on the grass diets.
(13) The culture maintained at pH 6.7 contained the types of bacteria often found in high concentration in the rumen, whereas the culture maintained at pH 5.0 had a high percentage of bacteria which could not be identified with the major rumen bacteria found in rumens of animals fed alfalfa hay.
(14) The N supplements had no significant effects on rumen pH, concentrations of volatile fatty acids, their molar proportions or the disappearance of DM or N from porous synthetic-fibre bags.
(15) On defaunation of the rumen to remove ciliated protozoa the concentration of phosphatidylcholine in ruminal digesta falls markedly and becomes lower than that in abomasal digesta.
(16) This strain became established more easily in the rumen of lambs that had received complex inocula (group I).
(17) A comparison was made of the effect of providing or denying water to steers during the last 20 h before slaughter on carcase weight, bruising, muscle pH, and during the dressing process on the numbers of rumens from which ingesta was split and the number of heads and tongues condemned because of contamination with ingesta.
(18) In both experiments, the proportion of L-lactate in rumen fluid decreased from almost 100 to about 50% of total lactate by the end of phase II.
(19) passing through a 1.18 mm sieve during wet sieving) from the reticulo-rumen were negatively related to dimensions of particles, with greater ease of outflow for legume than for grass particles of the same length or diameter.
(20) There was a significant interaction effect such that increasing level of intake did not increase UAN with the high-NIS diet, despite an increased fractional outflow of solids from the rumen, in contrast to the increase observed with the high-wheat diet.