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Created page with '* This is much less dramatic than a displaced stomach in the dog, and develops chronically. * Occurs most frequently in heavy yielders on …'
* This is much less dramatic than a displaced [[Forestomach - Anatomy & Physiology|stomach]] in the dog, and develops chronically.
* Occurs most frequently in heavy yielders on high concentrate diets and in late pregnancy.
** Rearrangement of abdominal viscera in pregnancy is thought to be an important aetiological factor.
===Clinical===
* Animals display general malaise and abdominal pain.
* Left flank bulges behind ribs
** "Pings" on auscultation.
* Not usually acutely fatal, but results in loss of condition and emaciation if untreated.
===Pathogenesis===
* There are two manifestations of [[The Abomasum - Anatomy & Physiology|abomasal]] displacemet. In both the [[The Abomasum - Anatomy & Physiology|abomasum]] becomes trapped between [[The Rumen - Anatomy & Physiology|rumen]] and abdominal wall.
*# '''Ventral and to the left of [[The Rumen - Anatomy & Physiology|rumen]] (LDA)''' - the more common presentation.
*#* Most common in dairy cattle around parturition.
*#* [[The Abomasum - Anatomy & Physiology|Abomasal]] atony and increased gas production lead to displacement
*#** Is induced by the combination of a high concentrate diet, hypocalcaemia and increased [[Volatile Fatty Acids - Anatomy & Physioogy|volatile fatty acids]] from the [[The Rumen - Anatomy & Physiology|rumen]].
*# '''To the right of rumen (RDA)''' - less common.
*#* Constriction of blood vessels and trauma to the vagus nerve results in [[The Abomasum - Anatomy & Physiology|abomasal]] distenstion with blood-stained fluid and gas, congested mucosa and infarction.
*#* The [[The Abomasum - Anatomy & Physiology|abomasum]] may rupture, causing peritonitis, shock and death.
*May be associated with secondary development of ketosis.
[[Category:Stomach_and_Abomasum_-_Pathology]][[Category:Cattle]]
* Occurs most frequently in heavy yielders on high concentrate diets and in late pregnancy.
** Rearrangement of abdominal viscera in pregnancy is thought to be an important aetiological factor.
===Clinical===
* Animals display general malaise and abdominal pain.
* Left flank bulges behind ribs
** "Pings" on auscultation.
* Not usually acutely fatal, but results in loss of condition and emaciation if untreated.
===Pathogenesis===
* There are two manifestations of [[The Abomasum - Anatomy & Physiology|abomasal]] displacemet. In both the [[The Abomasum - Anatomy & Physiology|abomasum]] becomes trapped between [[The Rumen - Anatomy & Physiology|rumen]] and abdominal wall.
*# '''Ventral and to the left of [[The Rumen - Anatomy & Physiology|rumen]] (LDA)''' - the more common presentation.
*#* Most common in dairy cattle around parturition.
*#* [[The Abomasum - Anatomy & Physiology|Abomasal]] atony and increased gas production lead to displacement
*#** Is induced by the combination of a high concentrate diet, hypocalcaemia and increased [[Volatile Fatty Acids - Anatomy & Physioogy|volatile fatty acids]] from the [[The Rumen - Anatomy & Physiology|rumen]].
*# '''To the right of rumen (RDA)''' - less common.
*#* Constriction of blood vessels and trauma to the vagus nerve results in [[The Abomasum - Anatomy & Physiology|abomasal]] distenstion with blood-stained fluid and gas, congested mucosa and infarction.
*#* The [[The Abomasum - Anatomy & Physiology|abomasum]] may rupture, causing peritonitis, shock and death.
*May be associated with secondary development of ketosis.
[[Category:Stomach_and_Abomasum_-_Pathology]][[Category:Cattle]]