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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Controlled test of anthelmintic activity of levamisole administered to calves via drinking water, subcutaneous injection, or alfalfa pellet premix.

A controlled test of the activity of 3 formulations of levamisole, at the dose level of approximately 8 mg/kg, against naturally occurring infections of gastrointestinal parasites and lungworms was made in 24 calves allotted to 4 groups of 6 calves each. Levamisole was administered to group I calves in the drinking water, to group II calves by subcutaneous injection, and to Group III calves by feeding alfalfa pellets mixed in corn silage; group IV calves were nontreated controls. Group I calves consumed the medicated water between 4 hours and 20 minutes and 9 hours and 40 minutes; group III calves consumed the medicated feed within 2 hours and 15 minutes. For calves of group I, II, and III, removals of 4th-stage Ostertagia sp were 64, 23, and 0%; of mature Ostertagia ostertagi, 90, 93, and 83%; and of mature Trichostrongylus axei, 92, 99, and 92%, respectively. For all 3 treated groups of calves, removal was 100% for 4th-stage Cooperia sp and for mature Trichostrongylus colubriformis, Cooperia oncophora, Cooperia punctata, and Oesophagostomum radiatum. Removals of Dictyocaulus vivipara were 90, 90, and 94% for calves of groups I, II, and III, respectively. There was no evidence of toxicosis. At necropsy, 2 calves in group II had small areas of edema at the sites of injection of levamisole.[1]

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