This disease occurs when cattle swallow metallic foreign objects such as nails or wires. The inner lining of a cattle's first stomach is honeycomb-like and has powerful contractions, causing the sharp tip of ingested metal to penetrate the second stomach wall, the diaphragm, and reach the pericardial cavity and even the heart. This results in bacterial infection and traumatic pericarditis. Cows with this disease lose their appetite, dislike exercise due to pain, dislike walking downhill, and stand with their left elbow outward when pressure is applied to the affected area. Extracardiac murmurs may also be heard by auscultation. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
ウシが釘,針金などの金属性異物をのみこんで起こす病気。ウシの第1胃の内膜はハチの巣状を呈し,その収縮運動は強力で,食べ下ろした金属のとがった先端が第2胃壁,横隔膜を貫通して心膜腔,さらには心臓にまで達することがある。その結果,細菌感染を起こして外傷性心膜炎に陥る。この病気のウシは食欲が減退し,疼痛(とうつう)のため運動を嫌い,下り坂の歩行を好まず,患部の圧迫により左側のひじを外方に開いて起立する。聴診により心外雑音が聞かれることもある。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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