Term
| What is the common name for histomoniasis? |
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Definition
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Term
| What organism is responsible for blackhead? |
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Definition
| -Histomonas meleagridis inside Heterakis gallinarum (cecal worm) inside earthworms |
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Term
| Which species is most commonly affected by blackhead? |
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Definition
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Term
| What lesions do we see due to balckhead in turkeys? |
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Definition
-typhitis w/ cecal thickening and fibrinonecrotic debris in the lumen
-target-shaped necrotic foci are also seen in the liver |
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Term
| What lesions and clinical signs do we see with coccidial infections? |
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Definition
-malabsorptive diarrhea due to villous atrophy
-exudative enteritis and colitis due to epi erosion and ulceraiton |
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Term
| What are the two major species of coccidia? Which species are affected by each? |
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Definition
-Eimeria and isospora
-Eimeria: calves, sheep and goats
-Isospora: pigs |
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Term
| Which agegroup of cattle is most often affected by intestinal Eimeria? |
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Definition
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Term
| What are the clinical signs of intestinal cocidiosis in cattle? |
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Definition
| -diarrhea, possible with mucus and tenesmus |
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Term
| What lesions do we see with intestinal coccidiosis in calves? |
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Definition
-necrohemmorrhagic enteritis
-fibrinohemorrhagic typhlocolitis
-congestion and edema of mucosa |
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Term
| Which sheep and goats are most comonly affected by intestinal coccidiosis? |
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Definition
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Term
| What lesions do we see with intestinal coccidiosis in young sheep and goats? |
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Definition
-edema and thickening of ileum, cecum, and colon
-numerous pale and slightly raised foci in SI mucosa |
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Term
| Which specific Isospora affects pigs? |
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Definition
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Term
| Which age of pigs are most commonly affected by Isospora suis? |
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Definition
| -piglets from 5-6d to 2-3w of age |
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Term
| What lesions do we see due to intestianl coccidiosis in neonatal pigs? |
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Definition
-fibrinous or fibrinonecrotic exudate in distal SI
-DOES NOT CAUSE HEMORRHAGE OR BLOODY FECES |
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Term
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Definition
| -small apicomplexan infects the brush border of enterocytes?- |
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Term
| Which age group of animals are affected by cryptosporidium? |
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Definition
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Term
| What clinical signs do we see due to crytpo intestinal infection? |
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Definition
-diarrhea due to malabsorption, minimal gross lesions
-inflammatory mediators may contribute a small secretory sompnent |
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Term
| Why is crypto worth special attention? |
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Definition
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Term
| What is Strongylus vulgaris? |
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Definition
| -large strongyel of horses |
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Term
| What lesions do we see due to Strongylus vulgaris? |
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Definition
-larvae cause endoarteritis in mesentery: esp cranial mesenteric a
-may result in infarction of segments of the intestine
-well-demarcated, dark red and necrotic foci |
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Term
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Definition
-whipworms
-small thread-like nematodes in the cecum and possibly colon |
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Term
| Which species are affected by intestinal whipworm infections? |
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Definition
| -most domestic mammals EXCEPT THE HORSE |
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Term
| What lesions do we see due to whipworm infections? |
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Definition
-red and edematous mucosa in the cecum and colon
-possible erosion and effusion of fibrin and blood from ucosal surface
-masses of tangled worms are visible on the mucosal surface |
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Term
| What clinical signs do we see with whipworm infections? |
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Definition
| -chronic diarrhea and dysentery with possible weight loss |
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Term
| What are Ancylostoma spp? |
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Definition
-adults in SI: feed o blood => anemia and hypoproteinemia
-red mucoid SI content with attached worms |
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Term
| What are Ascardis? HOw do they cause damage? |
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Definition
-adults live in SI
-larval migration => foci of inflamamtion and scarring in liver and lungs |
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Term
| What are the clinical signs do we see due to Ascarids spp? |
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Definition
-esp in foals large numbers of worms => intussusception or impaction
-intestinal rupture or perforation is possible
-heavy parasite burden may lead to wt loss or poor growth |
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