| epizootiology of helminth parasitism in a beef cow/calf herd in minnesota. | to test the effect of a parasite control program for cattle, 2 groups of similar composition were grazed on separate, but equivalent, improved pastures. cattle in 1 group were treated with fenbendazole at 5.0 mg/kg of body weight at the time they were turned out on pasture in the spring and again at midsummer, when the cattle were moved to a new pasture. the control group was not treated. parasite egg counts were significantly (p less than 0.04) lower in the treated group. trichostrongyle-type e ... | 1991 | 1767995 |