Syringe immersion test as bioassay against : Macrocyclic lactones dose-response relationship.

Background: For the diagnosis of tick sensitivity against different acaricides, there are and methods. The main method, the stable test, is considered a defining methodology. In Uruguay, the () strain Mozo is used as the standard susceptible strain by the regulatory authorities.

Is the suckling period and application pattern relevant for fluazuron against tick infestation in cows and their suckling calves?

Background: Fluazuron is a chitin synthesis inhibitor administered as a pour-on formulation in cattle for tick control. This study analyzes under endemic tick infestation, the incidence of the pour-on application pattern on the plasma levels of fluazuron in calves and cows in the lactation period of the beef cow. Two hundred and ninety-two beef cows around parturition were treated with a commercial pour-on formulation of fluazuron at a rate of 2.

Therapeutic equivalence of ivermectin 1% and two novel formulations combined of ivermectin 1% + fluazuron 12.5% for the control of in beef cattle from Uruguay.

Background: Novel combinations of ivermectin (IVM) and fluazuron (FLU) are presented as an alternative for the control of ticks in cattle. Applying a combination of drugs with the aim to affect different stages of the parasite's life cycle is established as a potential measure to achieve the control of ticks in cattle.

Aim: To determine the therapeutic equivalence between two novel formulations of IVM 1% combined with FLU 12.