Vol. 9, Issue 10, Part D (2025)

Ticks and the diseases they transmit pose a notable threat to livestock farming globally. The tick species Boophilus microplus was collected from ten different agricultural climatic regions in the Thrissur district of Kerala. In each area, thirty heavily engorged female ticks were randomly sampled from ten dairy cows, and their resistance to insecticides was evaluated using the larval packet method. A substantial number of resistance cases were noted particularly for pyrethrins and azadirachtin compounds. Phosphine-31 was identified as a chemical compound, with a numerical value of 48.01. Additionally, it was calculated that among 100 samples tested, 2% exhibited resistance to chlorpyrifos, cyromazine, and dimethoate pesticides individually. Risk factors were determined to be statistically significant at p<0. The analysis revealed that exposure to acaricidal treatments aimed at B. microplus has accelerated the development of drug-resistant arthropod pests, influenced by livestock management practices.