Department of Farm Animals, Vetsuisse-Faculty, University of Zurich, Zurich, Switzerland.
Acta Vet Scand. 2014 Mar 14;56(1):14. doi: 10.1186/1751-0147-56-14.
Three Brown Swiss cows with abnormal regurgitation because of a perioesophageal disorder are described.
The cows were ill and had poor appetite, salivation and regurgitation of poorly-chewed feed. Collection of rumen juice was successful in one cow, and in another, the tube could be advanced to the level of the 7th intercostal space, and in the third, only saliva could be collected. In one cow, oesophagoscopy revealed a discoloured 10-cm mucosal area with fibrin deposits. Thoracic radiographs were normal. The cows were euthanased and examined postmortem. Cow 1 had a large perioesophageal abscess containing feed material at the level of the thoracic inlet, believed to be the result of a healed oesophageal injury. Cow 2 had an abscess between the oesophagus and trachea 25 cm caudal to the epiglottis with the same presumed aetiology as in cow 1. Cow 3 had a mediastinal carcinoma that enclosed and constricted the oesophagus.
Abnormal regurgitation in cattle is usually the result of an oesophageal disorder. Causes of oesophageal disorders vary widely and their identification can be difficult.
描述了三头因食管周围疾病而出现异常反刍的瑞士棕色奶牛。
这些奶牛患病，食欲不振、流涎且反刍未经充分咀嚼的饲料。其中一头奶牛成功采集了瘤胃液，另一头可将胃管推进至第 7 肋间隙水平，而第三头仅能采集到唾液。其中一头奶牛的食管镜检查显示有一段 10 厘米长的变色黏膜区域，伴有纤维蛋白沉积。胸部 X 光片正常。这些奶牛被实施安乐死并进行了剖检。奶牛 1 在胸入口处有一个大的食管周围脓肿，其中含有饲料，据信这是食管损伤愈合的结果。奶牛 2 在会厌软骨下方 25 厘米处的食管和气管之间有一个脓肿，其病因与奶牛 1 相同。奶牛 3 患有纵隔癌，该肿瘤包绕并压迫食管。
牛的异常反刍通常是食管疾病的结果。食管疾病的病因多种多样，其识别可能较为困难。
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