Board questions

Question 1

5. A 5-year-old gelding presents with ataxia and incoordination in all four limbs. A CSF tap
   reveals antibodies to Sarcocystis neurona. How did the horse most likely acquire this infection?
   a. transmission of sporozoites via the bite of a tabanid fly
   b. ingestion of oocysts from the feces of an infected horse
   c. ingestion of sarcocysts in the muscle tissue of an infected opossum
   d. transmission of sporozoites via tick bite
   e. ingestion of sporocysts from opossum feces in contaminated feed or water

Answer 1

E

Question 2

13. Which of the following are effective for the treatment of clinical coccidiosis in cattle?
    a. amprolium
    b. metronidazole
    c. decoquinate
    d. a and b
    e. all three drugs listed

Answer 2

A

Question 3

14. Pigs become infected with the thorny-headed worm, Macracanthorhynchus hirudinaceus,
    upon:
    a. ingestion of free L3 from the environment
    b. skin penetration by L3 from the environment
    c. ingestion of L3 in larvated eggs from the environment
    d. ingestion of an infected beetle containing a cystacanth stage
    e. ingestion of L1 in the fresh feces of a fellow pig

Answer 3

D

Question 4

17. Which of the following drugs is effective for treating Giardia and has the least toxicity
    problems associated with its use in dogs and cats?
    a. ivermectin
    b. milbemycin
    c. metronidazole
    d. albendazole
    e. fenbendazole

Answer 4

E

Question 5

29. Neospora caninum infection in cattle causes:
    a. weight loss
    b. bloat
    c. sterility in bulls
    d. abortion
    e. chorioretinitis in aged (> 10 years) animals

Answer 5

D

Question 6

39. Which of the following antiparasitic agents is most suitable for use against immature stages 
of Fasciola hepatica? 
a. fenbendazole 
b. ivermectin 
c. praziquantel 
d. albendazole 
e. clorsulon

Answer 6

E

Question 7

55. A dog that chases and eats wild rabbits is most likely to become infected with which 
cestode? 
a. Echinococcus granulosus 
b. Taenia saginata 
c. Diphyllobothrium latum 
d. Dipylidium caninum 
e. Taenia pisiformis

Answer 7

E

Question 8

56. A pigeon presents with a 1-week history of anorexia and weight loss. Accumulations of a
    white, caseous exudate are present in the oral cavity. A wet mount of this material reveals
    several pear-shaped flagellated protozoa with an undulating membrane. The most likely
    diagnosis is:
    a. Trichinella
    b. Trichosomoides
    c. Trichostrongylus
    d. Trichomonas
    e. Trypanosoma

Answer 8

D

Question 9

60. Which of the following drugs would be the best choice for the treatment of a Fasciola
    hepatica infection in a pregnant beef cow?
    a. albendazole
    b. fenbendazole
    c. eprinomectin
    d. clorsulon
    e. praziquantel

Answer 9

D

Question 10

65. Which of the following types of adult cattle are, as a group, most likely to be infected with the
    causative agent of bovine trichomoniasis?
    a. bulls > 4 years of age
    b. cows
    c. steers
    d. virgin heifers
    e. a and b

Answer 10

E

Question 11

81. Which of the following products is appropriate pharmacotherapy for equine protozoal 
myeloencephalitis? 
 a. metronidazole 
 b. nitazoxanide 
 c. ponazuril 
 d. fenbendazole 
 e. b and c

Answer 11

E

Question 12

84. A 5-year-old neutered male golden retriever from Oregon with a history of salmon
    consumption presents with high fever, lethargy, diarrhea, and generalized lymphadenopathy.
    Fecal sedimentation examination reveals small operculated eggs. What is the most appropriate
    pharmacotherapy?
    a. ivermectin
    b. doramectin
    c. doxycycline
    d. pyrantel
    e. lincomycin

Answer 12

C

Question 13

87. Dogs acquire infection with Sarcocystis sp. via:
    a. ingestion of sporulated oocyst from the
    environment
    b. ingestion of infected tick
    c. ingestion of intermediate host containing sarcocyst
    in muscle
    d. ingestion of naked sporocyst from the environment
    e. tick bite

Answer 13

C

Question 14

92. Decoquinate is continually fed to confined poultry in order to control:
    a. Leucocytozoon spp
    b. Isospora spp.
    c. Ascaridia spp.
    d. Trichomonas gallinae
    e. Eimeria spp..

Answer 14

E

Question 15

95. You necropsy a turkey and find target-shaped circular areas of necrosis in the liver and
    caseous cores in the ceca. What is the most likely diagnosis?
    a. Ascaridia gallinae
    b. Histomonas meleagridis
    c. Eimeria meleagridis
    d. Tyzzeria pernicoiosa
    e. Trichomonas gallinae

Answer 15

B

Question 16

97. Several elk and moose in a mixed-species hoof stock exhibit at a wildlife park develop
    neurologic disease, including ataxia and torticollis. However, the white-tailed deer in the exhibit
    are all normal. You suspect a nematode may be responsible. If so, how did the animals become
    infected?
    a. ingestion of snail or slug intermediate hosts infected with third-stage larvae (L3)
    b. ingestion of first-stage larvae (L1) shed in feces of infected deer
    c. ingestion of third-stage larvae (L3) free on pasture
    d. skin penetration by first-stage larvae (L1) shed in feces of infected deer
    e. skin penetration of third-stage larvae (L3) free on pasture

Answer 16

A

Question 17

98. You examine a herd of goats with pale mucous membranes and submandibular edema.
    Necropsy examination of one goat reveals nematodes in the abomasum with a characteristic
    spirally-striped, “barber pole” appearance. What parasite is this most likely to be?
    a. Teladorsagia circumcincta
    b. Trichostrongylus colubriformis
    c. Haemonchus contortus
    d. Nematodirus battus
    e. Cooperia punctata

Answer 17

C