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YCCD VTP Vett4 Parisitology
Common parasites of dogs, cats, and farm animals
67
Veterinary Medicine
Undergraduate 1
09/26/2013

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Term
Roundworms in dogs
Definition
Toxacara canis, Toxascaris leonina
Term
Roundworms in cats
Definition
Toxacara catis, Toxascaris leonina
Term
Typical hookworms in dogs
Definition
Ancylostoma braziliense, Ancyclostoma caninum, Uncinaria stenocephala
Term
Typical hookworms in cats
Definition
Ancylostoma tubaeforme, Ancylostoma braziliense, Uncinaria stenocephala
Term
Whipworms
Definition
Trichuris Vulpis (dogs and cats)
Term
Tapeworms in dogs
Definition
Taenia species, Dipylidium caninum, Echinococcus granulosus, Echinococcus multilocularis
Term
Tapeworms in cats
Definition
Taenia species, Dipylidium caninum, Echinococcus multilocularis
Term
Toxoplasma/Toxoplasmosis
Definition
Toxoplasma gondii- forms cysts in brain- dangerous in immunocompromised individuals
Term
Toxoplasma gondii oocysts
Definition
only shed in feces for 1-2 weeks, definitive host is cat
Term
Neospora (Neosporosis)
Definition
Neospora caninum (shed by definitive host- dog)
Term
Cryptosporidium (Cryptosporidiosis)
Definition
Cryptosporidium parvum (sub types C. canis (dog) and C. felis)
Term
Giardia (Giardiasis)
Definition
Giardia Lamblia AKA Giardia intestinalis or Giardia duodenalis
Term
Coccidia (Coccidiosis)
Definition
Isospora species- not contagious as they are species specific, causes sunflower yellow diarrhea
Term
Trichostrongylus
Definition
Trichostrongylus sp. (poultry), Trichostrongylus axei (sheep, goats, horses, cattle)
Term
Ostertagia
Definition
Ostertagia ostertagi (cattle)
Term
Hemonchus
Definition
Hemonchus contortus (barberpole worm- ruminants)
Term
Cooperia
Definition
Cooperia species (ruminants)
Term
Nematodirus
Definition
Nematodirus spathoger, Nematodirus fillicollis (sheep)
Term
Strongylus
Definition
Strongylus vulgaris, Srongylus equinus, Strongylus edentatus (horse)
Term
Strongyloides
Definition
Strongyloids papillosus (ruminants), Strongyloids ransomi (pigs), Strongyloides westeri (horses)
Term
Oesophagastomum
Definition
Oesophagastomum columbianum, Oesophagastomum venulosum (sheep), Oesophagostomum radiatum (ruminants, especially cattle), Oesophagostomum dentatum Oesophagostomum brevicaudum (pigs).
Term
hookworms in livestock
Definition
Bunostomum sp.
Term
Ascaris
Definition
Ascaris suum (pigs)
Term
Baermann technique
Definition
Used to isolate lungworm larvae
Term
McMaster technique
Definition
quantitative technique to determine the number of eggs present per gram of feces.
Term
Causes of false positive fecal flotation results
Definition
Animal is a non-clinical carrier of the parasite, clinical parasitism due to auto-immune disorder, parasite species found on fecal flotation is not the right species for that host, lab error, wrong parasite identified
Term
Causes of a false negative Fecal Flotation
Definition
Incorrect diagnosis, lab error, incidental species of parasite (rather than pathological), parasites shed intermittently, low numbers of oocysts or larvae, low parasite load, eggs already hatched, incorrect technique (eggs did not float due to SG of solution)
Term
Sedimentation technique
Definition
qualitative method for detecting trematode eggs (Paramphistomum) and other species in the feces.
Term
Centrifugation technique
Definition
“Best Practice” for processing all fecal samples in veterinary medical practice,
Term
Flotation materials
Definition
Sodium chloride, Sugar, Zinc sulfate, Magnesium sulfate, Sodium nitrate
Term
Fecal cultures
Definition
Some species of eggs are not easily differentiatied so a culture of the egs until they hatch into L3 (infective) larvae is done to ID them.
Term
Other tests used for fecal examinations
Definition
Agar jell, PCR, Fecal culture, SNAP test (Giardia)
Term
Wisconsin sugar flotation technique
Definition
more sensitive than the Fecalyzer technique if low numbers of eggs are present as is usually the case in dairy cows.
Term
Fecal flotation limitations
Definition
fragile parasites, eggs that are too heavy to float, motile (protozoans, reproduce with live larvae (no eggs), not all parasites exist in the GI tract
Term
Moniezia
Definition
Tapeworm of ruminants (occasionally dogs get it after eating intestines of ruminants)
Term
Fasciola
Definition
Liver flukes (Fasciola hepatica- cows, sheep, goats, other livestock)
Term
Trichuris suis
Definition
whipworm of the pig
Term
Trichuris discolor
Definition
whipworm of the cow
Term
Toxacara vitulorum
Definition
Toxacara in cows
Term
Heterakis in turkeys
Definition
Heterakis gallinarum
Term
Parascaris in horses
Definition
Parascaris equorum
Term
Ascaridia galli
Definition
Ascaridia in chicken, turkey, and duck
Term
Quantity of sample needed for soft stool
Definition
2 grams
Term
Quantity of sample needed for slurry like feces
Definition
4 grams
Term
Quantity of sample needed for liquid feces
Definition
6 grams
Term
Minimum sample size for fecal floatation
Definition
1 gram of formed feces
Term
Gross examination
Definition
Specimens should be examined grossly for the presence of blood, mucus, intact worms, or tapeworm segments.
Color, odor, consistency, and debris should be noted.
Term
Hematochezia
Definition
red blood in feces- indicated bleeding in lower 6 inches of intestinal tract
Term
Melena
Definition
black, tarry stools. Are black due to presence of digested blood, indicates upper GI tract bleeding. Bad news
Term
Parasite oocyst that looks like a matador hat (or Mickey Mouse hat)
Definition
Trichuris vulpis
Term
Operculum
Definition
small areas that rise above the egg
Term
Genus
Definition
comes first in a name, always capitalized, full name always in italics or underlined
Term
species
Definition
comes second to Genus, always lower case, always italicized or underlined
Term
Direct fecal smear
Definition
Detects mobile protozoans, done with liquid fecal samples
Term
[image]
Definition
Dipylidium caninum
Term
[image]
Definition
Giardia Lamblia AKA Giardia intestinalis, Giardia duodenalis
Term
[image]
Definition
Moniezia
Term
[image]
Definition
Cryptosporidium parvum
Term
[image]
Definition
Fasciola Hepatica (liver flukes)
Term
[image]
Definition
Hemonchus contortus (barber pole worm)
Term
[image]
Definition
Nematodirus spathoger
Term
[image]
Definition
Neospora caninum
Term
[image]
Definition
Strongylus
Term
[image]
Definition
Toxoplasma gondii
Term
[image]
Definition
Trichostrongylus
Term
[image]
Definition
Trichuris vulpis
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