Under the guarantee of the low mortality, cattle were caught by ticks and had a few Babesia sis in the body gradually.
英
美
释义
在保证低死亡率的前提下,让牛只不断受蜱侵袭,使牛只体内对焦虫病尽快是低带虫状态,中群发病率逐年下降。
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