Elimination of Mange Mites Sarcoptes scabiei var. suis from Two Naturally Infested Danish Sow Herds Using a Single Injection Regime with Doramectin

Abstract

Attempts to eliminate Sarcoptes scabiei var. suis were made in 2 naturally infested sow herds, by intramuscular (i.m.) injection of doramectin (Dectomax, Pfizer, New York, USA). A single injection strategy was used. In one of the herds, the environment was treated with an acaricide following dry cleaning of floors, walls and equipment. In the second herd, no environmental treatment was performed. Results were measured by skin lesion scoring, ear scrapings to show Sarcoptes scabiei var. suis, and calculating rubbing index throughout the observation period of 20 months following treatment. Skin lesion scores decreased and stayed low following treatment for the entire observation period. Live Sarcoptes scabiei var. suis mites were isolated prior to treatment from both herds, but not following treatment. Rubbing index decreased following treatment, but was occasionally at or above 0.4. The results of these studies indicate that elimination of Sarcoptes scabiei var. suis from 2 naturally infested herds was successful, using doramectin in a single injection strategy. Precautions must be taken to ensure adequate dosing of every pig, and to avoid reinfestation due to poor biosecurity.

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@article{JENSEN2002EliminationOM, title={Elimination of Mange Mites Sarcoptes scabiei var. suis from Two Naturally Infested Danish Sow Herds Using a Single Injection Regime with Doramectin}, author={J P H JENSEN and LH Nielsen and Thor Arnason and V C Cracknell}, journal={Acta Veterinaria Scandinavica}, year={2002}, volume={43}, pages={75 - 84} }