Efficacy of ivermectin versus dual infections of Haemonchus contortus and Heligmosomoides polygyrus in the mouse

Autor: D. A. Ostlind, W. G. Mickle, S. Cifelli, Scott K. Smith, D. V. Ewanciw
Rok vydání: 2012
Předmět:
Zdroj: The Journal of parasitology. 99(1)
ISSN: 1937-2345
Popis: This report describes a novel assay for the detection of gastrointestinal anthelmintics using mice infected with Haemonchus contortus and adapted to the 1 animal/test group protocol. Mice infected with both H. contortus and Heligmosomoides polygyrus were fed ivermectin-medicated diets for 6 days. A dietary level of 0.09375 ppm was 98.1% effective against the 0- to 6-day-old abomasal stomach worm of sheep, whereas a level of 0.75 ppm reduced the 3- to 9-day-old H. polygyrus worm burden by 94.0%. H. contortus was approximately 8-fold more sensitive to ivermectin than was H. polygyrus in this model. The sensitivity of this assay rivals that of the gerbil-Trichostrongylus colubriformis model while utilizing a more economical host.
Databáze: OpenAIRE