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Alimentary Tract Protozoa 2 (Coccidia), Life Cycle, Diagnosis, Eimeria…
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Life Cycle
Sporulation
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Warmth, humidity, oxygen and takes 24-48 hours
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Diagnosis
Lesion Scoring
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+4 = extremely severe, or death
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Control
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Investigation
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Look at records
Mortality, FCR, Water intake (more = problem)
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Chemoprophylaxis (Drugs)
Ionophores (85%)
Suppresses infection, doesn't kill (leaky)
Mode of Action
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Cell cant reproduce, but still alive to stimulate immune response (good thing!)
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Vaccination is an option
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Live, Wild-type
fully virulent, can make some birds get more sick
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Pathogenesis
Haemorrhagic Group
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Bloody feces, high morbidity, mortality
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Depends on host species, dose, and host response
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Describe in detail the life-cycle of Eimeria, using E. tenella as an example
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Discuss in general terms the procedures used to investigate an alleged outbreak of coccidiosis on a broiler site, including lesion scoring
Explain the epidemiology and control of coccidiosis, including vaccination