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8 Cards in this Set
- Front
- Back
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Bovine Coccidiosis - General
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Enteric, Winter, Nervous forms
E. zuernii & E. bovis Usualy seen in calves < 6 mos, at weaning, in feedlots - 15-17 day incubation, not seen <3 weeks Acute - D+ w/mucoid, bld Distal ileum - Asexual. Cecum/colon- Sexual Winter- Jan-March, Parasites enter extra-intestinal cells, become dormant. Stress/nutritional demands -> parasite returns Nervous- E zuernii mainly, CNS signs also occur, 30% of cases |
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Small Ruminant Coccidiosis
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Sheep
E. ahsata E. ovina - white patches in SI E. ovinoidalis - hemorrhagic diarrhea Goat E. arloingi E. christensensi - white foci on SI villi E. ninakohlyakimovae - white plaques, mucosal surface of SI, cecum, colon Decr weight gain, Angorra/young goats most impacted |
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Chicken Coccidiosis
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E. necatrix - blood d+, lower SI, white foci
E. tenella - bloody d+, cecal core, anemia - 2-6 wk chicks |
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Rabbit Coccidiosis
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E. magna, intestinalis, perforans : possible d+
E. stiedae - Hepatic coccidiosis - Bile duct epith hyperplasia |
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Geese Coccidiosis
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E. truncata - renal tubular epith
- Enlarged kidneys, renal tubules packed w/urates, weak goslings |
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Isospora
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Feal-oral transm of sporulated oocyst
Paratenic hosts in dog/cat spp - Rodent ingests -> gut wall, enters extra-intestingal cells -> forms monozoic cyst -> remanines viable, develops after ingestion in dog-> sporozoite released -> merogony in SI Unsporulated oocyst - shed in feces Sporogony - Environent Merogony/gametogony - SI Diarrhea, weakness |
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Eimeria & Isospora differences
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Eimeria: Has micropyle/micropyle cap
4 sporocysts/oocyst, 2 sporozoites/sporocyst Isospora - No micropyle/cap 2 sporocysts/oocyst, 4 sporozoites/sporocyst |
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Isospora suia
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NPC (neonatal porcine coccidiosis) 7-10 days old
No paratenic host Source - other neonates, maybe weanlings Gaunt pigs w/acute d+, rare bld, whole litter not effected same time Multiply in SI cells, cells destroyed -> Villous atrophy -> decr gut absorption (mal. d+) Dx - Oocyst in Fecal float. Jeju/ileum - Fibrinonecrotic memb, villous atrophy, parasit Tx - Marquis Oral Paste |
