Comparison of a single dose of moxidectin and a five-day course of fenbendazole to reduce and suppress cyathostomin fecal egg counts in a herd of embryo transfer–recipient mares

摘要: Objective—To compare larvicidal regimens of fenbendazole and moxidectin for reduction suppression cyathostomin fecal egg counts (FEC) in a transient herd embryo transfer–recipient mares. Design—Randomized, complete block, clinical trial. Animals—120 mares from 21 states, residing on 1 farm. Procedures—An initial sample was collected each mare; with an FEC ≥ 200 eggs/g were assigned to treatment groups. Eighty-two horses received (10.0 mg/kg [4.5 mg/lb], PO, q 24 h 5 days) or (0.4 [0.18 once); data analyzed 14, 45, 90 days after treatment. Results—Mean 99.9% moxidectin-treated 41.9% fenbendazole-treated 14 By 45 days, mean exceeded pretreatment counts; however, FECs remained suppressed below values the duration 90-day study. Fecal significantly different betw...