right side displacement of the abomasum in a cow associated with duodenal ulceration

a six years old friesian holestin cow was admitted to the veterinary clinic of shiraz university during.-.the spring. the cow had been anorectic with a reduced milk yield. on physical examination the animal showed increased heart beats and respiratory rate. the rumen was hypomotile and resonance sound was heared on the upper half of intercostal 10th to right flank. distension and displacement of the abomasum was diagnosed. at surgery the abomasum was distended and displacement to the right side with counter clockwise direction. the rigth displacement of the abomasum was corrected. a hyperemic and firm duodenum was found, which was subsequently diagnosed as duodenal ulcer. abomasal ulceration in cattle is common but duodenal ulceration is rare.