Morphometric and immunohistochemical study of the omasum
of red deer during prenatal development.
Caption: Figure 2: a-d: Micrograph of bovine omasum
after treatment with 0.5% of Triton-X100 at 12, 24, 48 and 72h (H&E Stain, 100X)
uses muscle action to press and further break down chewed grass cud into smaller pieces and squeeze out excess water.
of ruminant animals is a many-walled organ where part of the water is removed from the mass leaving the rumen and reticulum.
The requirement that particles of plants be small (<1 mm) to pass from the rumenoreticulum to the omasum
limits capacity of ruminants to vary rate of passage through the digestive tract according to nutritional quality of forage (Spalinger, 2000).
The rumen, reticulum, omasum
, abomasum, small and large intestines, KPH fat, mesentery, liver, heart, kidney, lungs, tongue, spleen, diaphragm, esophagus, trachea, and reproductive tract were ground in an industrial cutter to create a composed and homogenized sample of organs and viscera.
The gastrointestinal tract was subsequently removed, weighed full and empty to calculate empty body weight by subtracting digesta weight from the fasted live weight; the gastrointestinal tract was then separated into stomach compartments (rumen, reticulum, omasum
and abomasum) and intestines (small and large intestines).
Contents of the rumen, reticulum, omasum
and abomasum were separately observed for the presence of parasites by sedimentation or sieving methods as are described in literature 13 .
They are called ruminant because they possess fore-stomach consisting of rumen reticulum and omasum
After fermentation in the rumen feed passes into the reticulum and the omasum
; special feeds such as grains may bypass the rumen altogether.
Afridi elaborated that organ 'Omasum
' was currently being exported to China in raw on a very low price, however, it could enhance export earnings manifold if its export to China was managed in the processed and value added form.