Ivermectin dissipation and movement from feces to soil under field conditions.

The aim of this work was to evaluate the fate of ivermectin (IVM) at two concentrations in cattle feces and its movement to the nearby soil and plants. Feces were spiked with IVM at two levels: 3000 ng g (high group, HG) and 300 ng g (low group, LG). Artificial dung pats were prepared and deposited in an experimental field area.