Field evaluation of a mixture of albendazole sulphoxide and levamisole against Ostertagia and Trichostrongylus spp in sheep.
1991
Anderson N. | Martin P.J. | Jarrett R.G.
The efficacy of the mixture at single and double dose rates was compared with the recommended rate of each alone, on groups of lambs on 22 farms, 16 of which had evidence of multiple anthelmintic resistance. A single dose of the mixture reduced mean egg counts by 95 percent on half the farms with recorded resistances and on all remaining farms. A double dose of mixture was effective on all but 4 farms. Reductions due to the mixture were due to the additive effects of the components on 18 of 22 farms; synergism was noted on 3 farms. It is recommended that mixtures of this type should be included in preventive control programmes.
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