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Published on: June 11, 2009
Duodeno-abomasal reflux in cows with abomasal displacement
1Medical and Forensic Veterinary Clinic II (Internal Diseases of Ruminants), Justus-Liebig-University, Giessen, Germany.
Zentralblatt Fur Veterinarmedizin. Reihe A
|September 1, 1996
Summary
Abomasal displacement in cows causes pathological duodeno-abomasal reflux, with severity varying by displacement type (LDA, RDA, AV). Bile acid levels indicate reflux changes during recovery after surgery.
Area of Science:
- Veterinary Medicine
- Gastroenterology
- Ruminant Physiology
Background:
- Abomasal displacement is a common gastrointestinal disorder in dairy cows.
- Understanding digesta transport and duodeno-abomasal reflux is crucial for managing this condition.
- Previous studies have not fully elucidated the dynamics of reflux during different displacement types and post-surgical recovery.
Purpose of the Study:
- To investigate abomaso-duodenal digesta transport during abomasal displacement and after surgical correction.
- To quantify intra-abomasal bile acid concentration as an indicator of duodeno-abomasal reflux.
- To compare reflux patterns across different types of abomasal displacement (LDA, RDA, AV) and recovery stages.
Main Methods:
- Measurement of intra-abomasal bile acid concentration in healthy cows and cows with left abomasal displacement (LDA), right abomasal displacement (RDA), and abomasal volvulus (AV).
- Sampling occurred during surgery, on day 1 post-surgery, and on day 3 post-surgery.
- Statistical analysis to compare bile acid concentrations between groups and over time.
Main Results:
- Healthy cows exhibit physiological duodeno-abomasal reflux.
- Cows with LDA, RDA, and AV showed significantly higher abomasal bile acid concentrations than controls.
- Abomasal bile acid concentration differed significantly between displacement types (LDA < RDA < AV) and changed dynamically during the post-surgical recovery period.
Conclusions:
- Abomasal displacement leads to pathological duodeno-abomasal reflux.
- The severity and pattern of reflux vary with the type of abomasal displacement.
- Findings suggest functional and/or mechanical impediments to abomaso-duodenal digesta transport contribute to pathological reflux.
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