| efficacy of ivermectin against parafilaria bovicola and lesion resolution in cattle. | thirty-two cattle were included in a study to confirm the efficacy of ivermectin administered at 200 micrograms kg-1 against parafilaria bovicola and to determine the time required for resolution of the lesions caused by the parasite. four treated and four control animals were slaughtered over 2 days starting 15, 30, 50 or 70 days after treatment. the number, distribution and surface area of carcass lesions, and the weight of tissue trimmed to render the carcasses aesthetically acceptable, were ... | 1991 | 1788933 |