Persistent efficacy of topical eprinomectin against nematode parasites in cattle.

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Cramer LG, Pitt SR, Rehbein S, Gogolewski RP, Kunkle BN, Langhoff WK, Bond KG, Maciel AE

Persistent efficacy of topical eprinomectin against nematode parasites in cattle.

Parasitol Res. 2000 Nov;86(11):944-6.

PubMed ID
11097305 [ View in PubMed
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Abstract

Six studies were conducted to evaluate the persistent efficacy of eprinomectin pour-on against experimental challenges with infective nematode larvae in calves. In each study, calves were randomly assigned to one untreated group and up to four test groups, which were treated with eprinomectin at 500 microg/kg body weight at weekly intervals before single bolus challenge. The calves were necropsied approximately 4 weeks after challenge infection for nematode recovery. Eprinomectin pour-on provided > or =90% efficacy against challenge with Haemonchus placei, Trichostrongylus axei and T. colubriformis at 21 days after treatment and against Cooperia oncophora, C. punctata, C. surnabada, Dictyocaulus viviparus, Nematodirus helvetianus, Oesophagostomum radiatum and Ostertagia ostertagi at 28 days after treatment.

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