title: Laboratory findings associated with abomasal ulcers/tympany in range calves.
abstract: The etiology of abomasal ulcers/tympany was investigated in 48 animals from 36 ranches in Wyoming and Nebraska. Results indicate that subclinical trace mineral deficiencies of copper and/or selenium exist in the range cattle in west central Nebraska and Wyoming. Etiological agents most frequently incriminated by bacteriologic cultures and/or histopathic examination were Clostridium perfringens and Campylobacter species. Histopathologic evaluation of abomasums revealed 31 of 38 cases contained abundant gram-positive bacteria associated with the damaged abomasal mucosa. Campylobacter-like organisms were demonstrated in 9 of 38 cases using the modified Dieterle stain. Clostridium perfringens was isolated in 14 of 38 cases, and Campylobacter jejuni was recovered from 5 of 38 cases.
authors.affiliation: Wyoming State Veterinary Laboratory, Department of Veterinary Science, University of Wyoming, Laramie 82070.
authors.forename: K W
authors.initials: KW
authors.lastname: Mills
authors.forename: J L
authors.initials: JL
authors.lastname: Johnson
authors.forename: R L
authors.initials: RL
authors.lastname: Jensen
authors.forename: L F
authors.initials: LF
authors.lastname: Woodard
authors.forename: A R
authors.initials: AR
authors.lastname: Doster
mesh_terms: D000018:Abomasum / Q000382:microbiology / Q000473:pathology*; D000821:Animal Feed / Q000032:analysis; D000818:Animals; D002167:Campylobacter / Q000302:isolation & purification; D002417:Cattle; D002418:Cattle Diseases / Q000473:pathology*; D003016:Clostridium perfringens / Q000302:isolation & purification; D005243:Feces / Q000382:microbiology; D005260:Female; D005766:Gastrointestinal Contents / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D008099:Liver / Q000737:chemistry; D008297:Male; D013272:Stomach Diseases / Q000473:pathology / Q000662:veterinary*; D013276:Stomach Ulcer / Q000473:pathology / Q000662:veterinary*; D014131:Trace Elements / Q000032:analysis
chemical_list: D014131:Trace Elements