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Diseases of the Abomasum: Introduction |  |
| Abomasal disorders include left displaced abomasum (LDA), right displaced abomasum (RDA), abomasal volvulus, ulcers, and impaction. Displacement or volvulus is seen most commonly in dairy cows, but can also be seen in dairy bulls and calves. Except for abomasal volvulus, abomasal displacement is rare in beef cattle and essentially undiagnosed in small ruminants. Ulcers are seen in dairy and beef cattle and in calves and lambs; they are rarely diagnosed in small ruminants.
Impactions can be primary, which is most frequent in beef cattle, or secondary, which develop most often in dairy cows as a form of vagal indigestion. Impactions may have a hereditary basis in some black-faced sheep. |
