Changes

[[Image:Bovimpaction.gif|right|thumb|125px|<small><center>Impaction of a bovine oesophagus (Courtesy of Alun Williams (RVC))</center></small>]]

[[Image:Bovimpaction.gif|right|thumb|125px|<small><center>Impaction of a bovine oesophagus (Courtesy of Alun Williams (RVC))</center></small>]]

Oesophageal obstruction in cattle is a more serious condition than in the horse. Obstruction may result in a failure to eructate leading to the development of free-gas bloat. The clinical signs are similar to those seen in the horse including ptyalism, coughing, arching of the neck, dysphagia and nasal discharge. The expanded rumen causes increased pressure on the diaphragm, reduced venous return to the heart and may lead to respiratory distress or asphyxia. Grinding of the teeth, hypersalivation or protrusion of the tongue may also be seen.

Oesophageal obstruction in cattle is a more serious condition than in the horse. Obstruction may result in a failure to eructate leading to the development of free-gas [[Bloat|bloat]]. The clinical signs are similar to those seen in the horse including ptyalism, coughing, arching of the neck, dysphagia and nasal discharge. The expanded rumen causes increased pressure on the diaphragm, reduced venous return to the heart and may lead to respiratory distress or asphyxia. Grinding of the teeth, hypersalivation or protrusion of the tongue may also be seen.

==Diagnosis==

==Diagnosis==