Nematodes of the superfamily Trichostrongyloidea, particularly abomasal species, have severe clinical implications associated with high morbidity and potential mortality of exotic ruminants housed in zoological institutions. The life cycle and ecology of Trichostrongyloid gastrointestinal nematodes (TGN) present challenges in their control including development of anthelmintic resistance and reinfection in high-density managed herds. Copper oxide wire particles (COWP) are used to help control TGN infections in ruminants, administered as a bolus or a feed additive. This study investigated the effects of frequent, low-dose administration of COWP fed as a top dressing on strongyle fecal egg counts (FEC) in gemsbok (