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

Abstract

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.

• Authors: T Schnieder, S Wheeler
• Journal: Angewandte Parasitologie (Angew Parasitol) Vol. 32 Issue 4 Pg. 185-92 (Nov 1991) ISSN: 0003-3162 [Print] Germany
• PMID: 1839489 (Publication Type: Journal Article)

Chemical References

• Pepsinogens
• Ivermectin

Topics

• 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)