The efficacy of strategic treatments with ivermectin pour-on against trichostrongylid and lungworm infections in first year grazing calves in northern Germany.

Three groups of 8 first year grazing calves each were either left untreated as controls (group 1), or were treated with 10 mg levamisole spot-on/kg bodyweight (group 2) or with 0.5 mg ivermectin pour-on/kg bodyweight 3, 8, and 13 weeks after turnout (group 3), respectively. Egg counts, herbage larval counts, worm counts of tracer calves, pepsinogen concentrations and weight gains showed a high efficacy of the strategic treatment in group 3 against gastrointestinal nematodes. The calves of group 1 and 2 developed clinical signs of parasitic bronchitis whereas the group 3 animals remained clinically healthy. The strategic treatment with ivermectin cleaned the respective pasture from infective lungworm larvae.
AuthorsT Schnieder, S Wheeler
JournalAngewandte Parasitologie (Angew Parasitol) Vol. 32 Issue 4 Pg. 185-92 (Nov 1991) ISSN: 0003-3162 [Print] GERMANY
PMID1839489 (Publication Type: Journal Article)
Chemical References
  • Pepsinogens
  • Ivermectin
  • Abomasum (parasitology)
  • Administration, Topical
  • Animals
  • Body Weight
  • Cattle
  • Cattle Diseases (drug therapy)
  • Dictyocaulus (isolation & purification)
  • Dictyocaulus Infections (drug therapy)
  • Feces (parasitology)
  • Female
  • Intestinal Diseases, Parasitic (drug therapy, veterinary)
  • Intestine, Small (parasitology)
  • Ivermectin (administration & dosage, therapeutic use)
  • Larva (isolation & purification)
  • Lung (parasitology)
  • Parasite Egg Count (veterinary)
  • Pepsinogens (blood)
  • Trichostrongyloidea (isolation & purification)
  • Trichostrongyloidiasis (drug therapy, veterinary)

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