Efficacy and safety of ivermectin applied topically to cattle under field conditions in Australia [nematode control]
1992
Eagleson, J.S. | Allerton, G.R. (Merck Sharp and Dohme Research Lab., Ingleburn (Australia))
In 15 field trials, 351 cattle received ivermectin, and 88 were untreated controls. The trials were conducted in 3 States and included a variety of cattle breeds and environmental conditions. Faecal samples were collected before treatment and 11 to 14 days after treatment for nematode egg counts. Data from these trials show that under Australian conditions, ivermectin applied along the mid-line of the back from the withers to the sacral region at a dose rate of 500 mcg per kg body weight, effectively controlled gastrointestinal nematode infections, and did not produce unacceptable adverse reactions in the animals.
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