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Elimination of Sarcoptes scabiei in Pig Herds by Single or Double Administrations of an Avermectin

Eliminering av Sarcoptes scabiei från svinbesättningar via enstaka eller upprepad injektion med avermectin

Acta Veterinaria Scandinavica volume 41, pages 227–235 (2000)Cite this article

Abstract

Attempts to eliminate Sarcoptes scabiei var. suis were made in 2 piglet producing herds by intramuscular injections with doramectin (Dectomax™, Pfizer inc., New York, USA). No hygienic measures of the environments were undertaken. In herd A, all animals were treated twice at a 14-day interval. Theoretically it should be possible to eliminate the mite with a single injection and therefore the animals in herd B were treated only once. The results were measured by attempts to demonstrate S. scabiei by skin scrapings, by recording skin lesions, by establishing rubbing indexes, and by measuring serum antibodies to S. scabiei. All adult animals greater than 8 months of age and 15 weaned piglets 8–16 weeks of age per herd were investigated prior to treatments and every fourth month for a total of 20 months following administration of the treatments. Live S. scabiei were demonstrated prior to treatments in both herds, but no further. Skin lesion scores, rubbing indexes and serum antibody levels remained low throughout the study. It is possible to eliminate S. scabiei from a herd with one single injection of doramectin. Precautions must be taken to ensure that all animals get a correct dose and that the drug is properly administered.

Sammanfattning

Sanering mot svinskabb (S. scabiei var. suis) genomfördes i två smågrisproducerande besättningar. I besättning A behandlades samtliga individer med doramectin, två gånger med 14 dagars mellanrum. I besättning B behandlades samtliga individer med en enda injektion av doramectin. Ingen rengöring eller desinfektion av byggnaderna utfördes. Resultaten kontrollerades via skrapprov, klådindex och serologi avseende S. scabiei. Provtagning gjordes av samtliga vuxna djur och 15 smågrisar per besättning, var fjärde månad i totalt 20 månader. Resultaten indikerar, att saneringarna lyckats i båda besättningarna och att det är möjligt att genomföra en skabbsanering med en enda avermektin-injektion till samtliga djur vid ett och samma tillfälle, utan att vidta några hygieniska åtgärder i omgivningen. Det är dock viktigt, att en korrekt dosering och en korrekt injektionsteknik används. Likaså bör nyinköpta djur placeras i karantän i minst tre veckor och där behandlas två gånger, för att undvika att smitta reintroduceras i besättningen.

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Authors and Affiliations

  1. Department of Large Animal Clinical Sciences, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, P.O. Box 7018, 750 07, Uppsala, Sweden

    M. Jacobson

  2. National Veterinary Institute, Uppsala, Sweden

    S. Bornstein & P. Wallgren

  3. Pfizer AB, Täby, Sweden

    E. Palmér

Authors
  1. M. Jacobson
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  2. S. Bornstein
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  3. E. Palmér
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  4. P. Wallgren
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Correspondence to M. Jacobson.

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Jacobson, M., Bornstein, S., Palmér, E. et al. Elimination of Sarcoptes scabiei in Pig Herds by Single or Double Administrations of an Avermectin. Acta Vet Scand 41, 227–235 (2000). https://doi.org/10.1186/BF03549631

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Acta Veterinaria Scandinavica

ISSN: 1751-0147