Which form of an Eimeria oocyst is usually infective to a susceptible animal?
Correct answer: A. A fully sporulated oocyst
- A. A fully sporulated oocyst
- B. A newly shed unsporulated oocyst
- C. A ruptured oocyst wall
- D. A free merozoite in water
Explanation
Sporulation produces the infective sporozoites within the Eimeria oocyst. A freshly passed unsporulated oocyst generally requires environmental development before it can infect another host.
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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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