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Lab 12 Appendix: Large Animal Parasite Review - Cattle

Parasite

Location in Host

Diagnostic Stage

Lab Specimen+

*Haemonchus

abomasum

egg in feces

SSB 28

*Ostertagia

abomasum

egg in feces

 

*Trichostrongylus

abomasum or sm. int.

egg in feces

 

*Paramphistomum

rumen

eggs in feces

 

*Cryptosporidium

sm. intestine

oocysts in feces

SSB 97

*Giardia

sm. intestine

cyst in feces

 

*Cooperia

sm. intestine

egg in feces

 

*Nematodirus

sm. intestine

egg in feces

 

*Bunostomum

sm. intestine

egg in feces

 

*Strongyloides

sm. intestine

larvated eggs in feces

B 49

*Moniezia

sm. intestine

eggs in feces

B 37, SSB 7

*Trichuris

lg. intestine

eggs in feces

 

Chabertia

lg. intestine

egg in feces

 

*Eimeria

cecum, lg. intestine

oocysts in feces

 

*Fasciola

bile ducts

eggs in feces

B 11, SSB 12, 13

*Dicrocoelium

bile ducts

eggs in feces

SSB 16, 17

*Dictyocaulus

lungs

larvae in feces

 

*Hypoderma

skin of back

larva in skin

 

*Psoroptes

skin

adults on skin

SSB 88

*Chorioptes

skin

adults on skin

 

*Sarcoptes

skin

adults in skin scrape

 

*Damalinia

skin

adults on skin or hair

SSB 80, 81

*Trypanosoma

blood

trypanosome in blood smear

SSB 39

*Taenia

muscle

none

 

*Sarcocystis

muscle

none

SSB 50

Trichomonas

reproductive organs

trophozoites on smear

SSB 42

* Also in other hosts.

+ B = Bottle; SSB = Student Slide Box slide #

Quiz Questions:

  1. A calf on a dairy farm has had liquid diarrhea for the past 3 days.   On a fecal flotation you notice many very  small objects and you therefore do an Acid fast stain of a fecal smear.  A representative field (oil lens) is shown below.
    1. Identify the objects indicated by the red arrows.
    2. Identify the objects indicated by the blue arrows.

Click here for the answer:

 

 


Copyright © 2006 - University of Pennsylvania School of Veterinary Medicine, All rights reserved.
Faculty: Dr. Thomas Nolan
Students: Molly Church V'09, Diana Knight V'08, Douglas Gilson V'05, Chris Dykhouse V'04, Kimberly Mah V'00

Comments or Questions contact Dr. Tom Nolan at: