奶牛皱胃左方变位不同方法治疗前后瘤胃内纤毛虫数量及pH的变化
내우추위좌방변위불동방법치료전후류위내섬모충수량급pH적변화
Observation of Rumen Ciliates and pH Changes in Cows Abomasum on the Left Deflection of Different Therapy
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