Why is pasture rotation useful in controlling many gastrointestinal nematodes of grazing livestock?
Correct answer: B. It reduces exposure to infective larvae
- A. It kills adult worms inside the host
- B. It reduces exposure to infective larvae
- C. It prevents all eggs from being shed
- D. It replaces anthelmintic treatment completely
Explanation
Moving animals to less contaminated pasture can reduce the number of infective larvae they ingest. Rotation does not kill established adult worms and cannot by itself eliminate every parasite stage or replace appropriate treatment.
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About Veterinary Parasitology
Covers protozoa, helminths and arthropods that infect domestic animals, including their morphology, life cycles, hosts, transmission and clinical effects. Questions connect parasite identification with diagnosis, prevention and treatment, and distinguish endoparasites from ectoparasites and definitive hosts from intermediate hosts.
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