Abstract
Two groups of first-year grazing cattle each were either left untreated as controls (group 1) or treated with an ivermectin bolus at turnout (group 2). Whereas group 1 suffered from dictyocaulosis, the bolus treated calves remained healthy. Shedding of lungworm larvae was completed prevented and gastrointestinal nematode egg output effectively reduced. During the 154 day grazing season the ivermectin bolus provided a season-long protection against parasitic gastroenteritis and bronchitis.
MeSH terms
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Animals
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Antibodies, Helminth / blood
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Antibodies, Helminth / immunology
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Antinematodal Agents / therapeutic use*
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Cattle
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Cattle Diseases / drug therapy
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Cattle Diseases / parasitology*
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Dictyocaulus / drug effects
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Dictyocaulus / immunology
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Dictyocaulus Infections / drug therapy
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Dictyocaulus Infections / parasitology*
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Feces / parasitology
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Gastrointestinal Diseases / drug therapy
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Gastrointestinal Diseases / parasitology
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Gastrointestinal Diseases / veterinary*
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Ivermectin / therapeutic use*
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Larva
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Lung Diseases, Parasitic / drug therapy
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Lung Diseases, Parasitic / parasitology
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Lung Diseases, Parasitic / veterinary*
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Pepsinogens / blood
Substances
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Antibodies, Helminth
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Antinematodal Agents
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Pepsinogens
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Ivermectin