Pathological findings of hemorrhagic bowel syndrome (HBS) in six dairy cattle
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| Authors: | Shigeo OWAKI Saiko KAWABUCHI Kosuke IKEMITSU Haruhi SHONO Hidefumi FURUOKA |
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| Institution: | 1)Okhotsk Agricultural Mutual Aid Association, 497–1 Misono, Kitami-city, Hokkaido 099–0879, Japan;2)Department of Basic Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro-city, Hokkaido 080–0834, Japan |
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| Abstract: | Six adult dairy cows clinically diagnosed as hemorrhagic bowel syndrome (HBS) were the
subjects of this study. The involved intestinal lesions were fixed in formalin and
examined macroscopically and histopathologically. Pathological examinations revealed large
intramural hematomas with necrotic foci, resulting in luminal obstruction. The mucosal
layer in the lesions was detached from the intestinal wall, and there were no hemorrhagic
changes in the lumen. The intramural hematomas were sometimes covered with histologically
intact mucosal layer. These pathological findings were not consistent with those of
“intraluminal blood clots” reported previously. Gram-positive and
anti-Clostridium antibody-positive short bacilli were found in
hemorrhagic necrotic areas. However, the exact relationship between
Clostridium spp. observed in the lesions and HBS remains unclear,
because this bacterium is a normal inhabitant in cattle. |
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| Keywords: | Clostridium HBS hemorrhagic bowel syndrome intramural hematoma |
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