Morphological Study of the Surface Structure of the Omasal Laminae in Cattle, Sheep and Goats

@article{Yamamoto1994MorphologicalSO,
  title={Morphological Study of the Surface Structure of the Omasal Laminae in Cattle, Sheep and Goats},
  author={Y Yamamoto and Nobuo Kitamura and Junzo Yamada and Anders Andr{\'e}n and Tadayuki Yamashita},
  journal={Anatomia},
  year={1994},
  volume={23}
}
The mucosal relief of the omasum in cattle, sheep and goats was examined by the naked eye, stereoscopic microscope and scanning electron microscope. The mucosal relief of the omasum showed wide variations both between and within these species. Omasal papillae on the laminae varied highly in shape, i. e. conical, rounded, claw‐like, wart‐like, finger‐like etc. They decreased gradually in size from the oral to the aboral region of the omasal lamina. Ridge‐like structures and linear arrangements… 
Macroscopic and microscopic anatomy of the omasum of the Baladi goat.
TLDR
This study identified anatomical and histological features that may be responsible for increased absorption of water and nutrients from the leafy material ingested by Baladi goats.
Morphological study of the Forestomach of the Japanese Serow (Capricomis crispus)
TLDR
Examination of the forestomach allows classification of the Japanese serows as requiring an intermediate type of feeding habit and being between concentrate selectors and grass‐roughage eaters from a morphological view.
Light and Scanning Electron Microscopic Studies on the Omasum of Goat ( Capra Hircus )
Accepted: 24/06/2016 Abstract The omasum of young goats of local mixed breed was having type-I to V laminae which were lined by stratified squamou s keratinised epithelium. Type-I and II laminae also
Reticular Groove of the Domestic Ruminants: Histochemical and Immunocytochemical Study
TLDR
It is demonstrated that nitric oxide (NO) is involved in the rumination activity and that it plays a double role in this activity in the reticular groove of all domestic ruminants studied.
Histochemical localization of glycosaminoglycans in the omasal papillae of sheep.
TLDR
The results suggest that the core region of the omasal papillae not only acts as a physical buffer resisting the local pressure from the lumen, but may also influence material transport through the Omasal mucosa.
Studies on the development of omasum in west african dwarf goats (Capra hircus)
TLDR
This work studied the sequential morphological changes of omasum in foetuses, neonates and adult West African Dwarf (WAD) goats by gross and light microscopic methods to find adaptation for better anchorage and muscular contraction of the laminae in WAD goats.
Scanning Electron Microscopical and Morphometrical Studies on Ruminal Papillae of Sheep Fed on Concentrates
TLDR
It is concluded that the most of the adaptation events were significantly established in 4–6 weeks; changes in 12 weeks were similar, but less developed.
Morfologia do estômago do cervo-do-pantanal (Blastocerus dichotomus, Illiger 1815)
TLDR
The morphology of the gastric chamber of the marsh deer is described, characterizing the external and internal macroscopical details and the microscopical architecture of these structures by light microscopy.
Distribution of ki-67, alpha smooth muscle actin and vimentin in the reticulum and omasum of Baladi goat
TLDR
The immunohistochemical study verifies the important roles of ki-67, αSMA and VIM in the structure and function of the reticulum and omasum of Baladi goats and confirms the importance of VIM as an intermediate filament protein.
Comparative omasum anatomy in ruminants: Relationships with natural diet, digestive physiology, and general considerations on allometric investigations
TLDR
Circumstantial evidence is presented leading to the hypothesis that the comparatively small and less complex omasa of “moose‐type” species do not necessarily represent an “ original” state, but may be derived from more complex states by ontogenetic reduction and fusion of omasal laminae.
...
1
2
...

References

SHOWING 1-10 OF 24 REFERENCES
Anatomy, development, and functions of the bovine omasum.
TLDR
Moisture contents of omasal contents decreased markedly from those of the rumen and reticulum, without respect to age in these calves, and significant differences were found in numbers of laminae among animals and between upper and lower portions of the omasum.
Scanning electron microscopic observation on the surface structure of the bovine rumen mucosa.
TLDR
Surface ultrastructure of the bovine rumen mucosa was observed by the scanning electron microscope and numerous granular or fold-like projections were noted on the cell surface which apparently originated from the thickened cell membrane of keratinizing horny cells.
Development of the omasum in sheep.
TLDR
The histogenesis of the omasal mucosa in sheep from the 2.5 cm crown-rump (c-r) length fetus to the adult was studied, and initial stages in the development of conical papillae were first seen in 15.0 cm fetuses, but the development was not completed until after birth.
A comparative study of the anatomy of the omasum in domesticated ruminants.
TLDR
It is suggested that the marked difference in structure of the omasum between the small and large ruminants may influence the food intake of these animals through the effects of this gut compartment on absorption of nutrients and passage of digesta.
Influence of ration on morphology, histology, and trace mineral content of sheep rumen papillae.
TLDR
The sequential changes in rumen epithelial development and micromineral content were studied in 15 wethers initially fed a ground control ration and changed to a pelleted feed known to induce ruminal parakeratosis.
Scanning electron microscopy of ruminal papillae in calves fed various amounts and forms of roughage.
TLDR
Calves fed concentrates alone or concentrates plus whey developed small, nodular, branched papillae which were cauliflower shaped and severly parakeratotic and were arranged on transverse folds on the floor of the atrium ruminis and on zigzag folds elsewhere in the rumen.
Changes in the Tissue and Volume of the Stomachs of Calves Following the Removal of Dry Feed or Consumption of Inert Bulk
TLDR
A stasis in omasal tissue growth occurred, and the abomasum continued to grow at the same rate as body size, and Mucosal and muscular growth were independent.
Exchanges of water and certain water-soluble minerals during passage of digesta through the stomach compartments of young ruminating bovines
TLDR
Quantitative comparisons indicated that addition of water and Na up to the reticulum, presumably in saliva, was significantly greater for the HR than the HC diets, and addition of Mg appeared to stimulate absorption of Na and waterup to the Reticulum for unknown reasons.
Influence of Purified Materials on the Development of the Ruminant Stomach
TLDR
Young dairy calves equipped with rumen cannulae were fed on milk and housed on elevated wood platforms to confirm the view that end-products of rumen fermentation rather than the coarse nature of the feed are the stimuli for the developed rumen papillae.
La vascularisation du feuillet du boeuf)
TLDR
The blood vascular system of the bovine omasum is studied to determine the phytochemical properties of the Bovine Omasum and its role in milk production.
...
1
2
3
...