A comparative trial on the efficacy on Deltamethrin, Cypermethrin and Fenvalerate, as acaricides in livestock animals

摘要

Boophilus sp. (grey tick) is a big problem in the field conditions of India. The currently available acaricides do not seem to give convincing results at the recommended dilution in the cases of Boophilus sp. infestation. Deltamethrin and Cypermethrin are the most widely used molecules in the Indian sub-continent. A new prospective molecule-Fenvalerate, extensively used in the United States of America and the European Union for the control of Horn flies, lice, and ticks in sheep, goats, cattle, andhorses (Nolan and Robertson, 1998; Wright et al., 1998), was tried during this experiment. An extensive drug trial was conducted from April and June 2000, on randomly selected 108 bovines at the Ghazipur Dairy Farm-New Delhi. The acaricides used for theexperiment were-Deltamethrin 1.25 percent w/v (Butox-Hoechst), Cypermethrin 100EC (Ektomin-Novarits), and Fenvalerate-20 percent EC (Ticomax-Ranbaxy Animal Health). Approximately, 500 ml of each preparation, at different concentrations, was uniformly sprayed on each animal, with a conventional pressure sprayer.