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Thecause of the impaction is often not known. However it may be the result of an intrinsic disturbance ofstomach function such as atony or defective secretion(Edwards)
Thecause of the impaction is often not known. However it may be the result of an intrinsic disturbance ofstomach function such as atony or defective secretion(Edwards)
Although speciifc cause not always evdient, ingestion of coarse (straw bedding, pooor quality forage), foregin objects, and feed that may swell after ingestion or improper mastication (persimmon seeds, mesquite beas, wheat, abrley, sugar beet pulp) implcated (151-4 in Sanchez)
===Predisposing factors===
===Predisposing factors===
*Dental disorders - roughage may be incompletely masticated
*Dental disorders - roughage may be incompletely masticated
*Feeding a horse that has signs of colic - there may be poor gastric emptying associated with generalised decreased gastrointestinal motility
*Feeding a horse that has signs of colic - there may be poor gastric emptying associated with generalised decreased gastrointestinal motility
*Rapid consumption of feedstuffs (Sanchezz)
*Inadeqaute water cosumption (Sanchez)
secondary gastric impaction associated with ragwort poisoning(Milne)
secondary gastric impaction associated with ragwort poisoning(Milne)