Changes

===Description===  

===Description===  

Impaction of the large colon is seen in horses with limited access to drinking water or grazing bare pastures. Horses fed on a low-roughage diet are more prone to developing the condition.

Impaction of the large colon is seen in horses with limited access to drinking water or grazing bare pastures. Horses fed on a low-roughage diet are more prone to developing the condition.

The sand is not ingested but accumulates within the right dorsal colon, pelvic flexure and transverse colon. Due to its high density it forms a sediment within the colon. This type of colic is particularly common in dry sandy regions of the world and is far less common in the UK and rest of Europe.

The sand is not ingested but accumulates and forms a sediment within the right dorsal colon, pelvic flexure and transverse colon. This type of colic is particularly common in dry sandy regions of the world and is far less common in the UK and rest of Europe.

===Clinical signs===

===Clinical signs===