Abstract
The cattle tick, Rhipicephalus (Boophilus) microplus, is one of the parasites that most cause damages to cattle. This parasite is the main transmitter of tick fever (Anaplasma and Babesia), which cause deaths in dairy herds. The Holstein cattle is one of the most used in crossing with Zebu cattle, and also one of the most susceptible to this parasite. The main hypothesis of this work is t…