Abomasal ulceration was found in 224(79.4% ) of 282 slaughtered beef cattles. The morbidity is high.

  • 本文应用眼观和病理组织学方法,对282头商品肉用牛皱胃检测,证实胃溃疡病存在,发病率高,达79.;4%25。
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