建立短角牛焦虫病带病免疫功能的探讨

Discussion about Premune Function of Babesiasis on Shorthorn

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。通过３～５年的时间，可建立全群的焦虫病带虫免疫功能后；在不发生蜱的超量感染或对牛只影响较大的不利因素的情况下；牛群不会再暴发焦虫病。

Under the guarantee of the low mortality, cattle were caught by ticks and had a few Babesia sis in the body gradually. After 3 - 5 years, premune function could be found in this cattle population.