Ultrastructure of the epithelium of the rumen, reticulum and omasum of grey, white and black Karakul lambs

dc.contributor.editorVerwoerd, Daniel Wynand
dc.contributor.upauthorGroenewald, Hermanus B.
dc.date.accessioned2014-01-27T07:42:15Z
dc.date.available2014-01-27T07:42:15Z
dc.date.created2013
dc.date.issued1993
dc.descriptionThe articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.en
dc.description.abstractMortalities due to digestive disturbances occur in homozygous grey and white lambs after they have reached weaning age. Milk-filled, distended rumens, due to malfunctioning of the oesophageal groove, are found 24 h after birth. Scanning electron microscopical studies revealed that milk caused sloughing of the luminal cells in the forestomachs of the affected lambs, while no sloughing of cells was apparent in control black lambs. The purpose of this study was to compare the ultrastructure of the forestomach mucosa of grey, white and black Karakul lambs; to determine whether the sloughing of luminal cells was evident in sections; and, if possible, to find a reason for the desquamation of the cells. Samples of the forestomach of grey, white and black Karakul lambs were prepared routinely for electron microscopy and studied with a Phillips electron microscope. In all the lambs the mucosa of the forestomach was a stratified squamous epithelium consisting of a stratum basale, stratum spinosum and stratum corneum. In the grey and white lambs the luminal cells of the stratum corneum were electron dense, non-nucleated and vacuolated. Sloughing of luminal cells was observed. In the black lambs no sloughing of cells was evident and the luminal cells were moderately electron-dense, nucleated elements. Desquamation of the luminal cells in the affected lambs revealed the underlying layer with its exposed desmosomal attachment sites. This explained the differences in the appearance of the luminal cells in the three groups of lambs as revealed by the scanning electron microscope.en
dc.description.librarianmn2014
dc.identifier.citationGroenewald, HB 1993, 'Ultrastructure of the epithelium of the rumen, reticulum and omasum of grey, white and black Karakul lambs’, Onderstepoort Journal of Veterinary Research, vol. 60, no. 3, pp. 197-204.en
dc.identifier.issn0330-2465
dc.identifier.urihttp://hdl.handle.net/2263/33096
dc.language.isoenen
dc.publisherPublished by the Agricultural Research Council, Onderstepoort Veterinary Instituteen
dc.rights© ARC-Onderstepoort (original). © University of Pretoria. Dept of Library Services (digital).en
dc.subjectVeterinary medicineen
dc.subject.lcshVeterinary medicine -- South Africa
dc.titleUltrastructure of the epithelium of the rumen, reticulum and omasum of grey, white and black Karakul lambsen
dc.typeArticleen

Files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
28groenewald1993.pdf
Size:
481.41 KB
Format:
Adobe Portable Document Format
Description:
Main article

License bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description: