EFFICACY OF IVERMECTIN AGAINST 5 GENERA OF SWINE NEMATODES AND THE HOG LOUSE, HAEMATOPINUS-SUIS

  • 1 January 1981
    • journal article
    • research article
    • Vol. 42  (8) , 1425-1426
Abstract
Twenty pigs sequentially infected with Oesophagostomum spp., Metastrongylus spp. and Trichuris suis, and maintained on lots contaminated with Ascaris suum and Strongyloides ransomi, were assigned to 1 of 4 groups of the basis of weight, sex and litter. Each group of pigs was given ivermectin s.c. at the rate of 0, 20, 100 or 500 .mu.g/kg of body weight. Lice on pigs were counted before treatment, on posttreatment day 1 and just before necropsy. Pigs were necropised on posttreatment day 6 or 7 and worms were recovered and counted. Efficacies were: 0-100% against A, suum; 66-100% against S. ransomi; 99.4-99.9% against Metastrongylus spp.; 0% against T. suis; 3.2-63% against adult Oesophagostomum spp.; 61.7-87.9% against immature Oesophagostomum spp.; and 99-100% against H. suis.