Journal of Veterinary Medical Science
Online ISSN : 1347-7439
Print ISSN : 0916-7250
ISSN-L : 0916-7250
Internal Medicine
Severe Hypoplasia of the Omasal Laminae in a Japanese Black Steer with Chronic Bloat-A Case Report
Mitsuhiro TAKAGIShuhei MUKAIYasuo FUSHIMIKouhei MATSUSHITANobuaki MIYOSHINobuhiro YASUDAHideo KITAJIMASenro TAKAMUREToshihiko MATSUSHITANobuo KITAMURAEisaburo DEGUCHI
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2007 Volume 69 Issue 12 Pages 1281-1286

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Abstract
An 11-month-old Japanese Black steer with chronic bloat underwent clinical and histological analyses. During the observation period, it showed normal appetite and fecal volume but persistent chronic bloat symptoms. Compared to controls, the steer's feces contained undigested large straws. Necropsy revealed normal rumen, reticulum, and abomasum but a small omasum. The rumen, reticulum, and abomasum mucosa was normal, with well-developed ruminal papillae. However, severe hypoplasia of the omasal laminae was observed along with hypoplasia reticular groove and ruminoreticular fold. The contents of the reticulum, omasum, and abomasums comprised undigested large sized hay particles. The omasum papillae showed no pathological abnormalities. This is a rare case of a steer with chronic bloat probably caused by severe hypoplasia of the omasal laminae.
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© 2007 by the Japanese Society of Veterinary Science

この記事はクリエイティブ・コモンズ [表示 - 非営利 - 改変禁止 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ja
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