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Laboratory Findings Associated with Abomasal Ulcers/Tympany in Range Calves
- Mills, Kenneth W., Johnson, Jerre L., Jensen, Rue L., Woodard, Lynn F., Doster, Alan R.
- Campylobacter jejuni, Clostridium perfringens, Gram-positive bacteria, bacterial infections, calves, copper, etiological agents, histopathology, mucosa, nutrient deficiencies, ranching, range livestock, selenium, stomach ulcers, Nebraska, Wyoming
- 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.