Pigs

Question 1

Fecal flotaton from a pig

11–35 x 9–20 µm

Identify the genus

Answer 1

Eimeria

Question 2

Direct smear of feces from a pig

50–150 µm

Identify the genus and species

Answer 2

Balantidium coli trophozoite

Question 3

Fecal flotation from a pig

40–60 µm

Identify the genus and species

Answer 3

Balantidium coli cyst

Question 4

Fecal flotation from a pig

50–70 x 40–60 µm

Identify the genus and species

Answer 4

Ascaris suum

Note: Ascaris suum is most often found with a thick, brown outer layer made of protein. However, this outer layer may be absent. If the protein coat is absent, the eggs are referred to as decorticated.

Question 5

Fecal flotation from a pig

69–85 x 39–45 µm

Identify two genera this egg could be

Answer 5

Oesophagostomum

and

Hyostrongylus

Note: These two eggs are indistinguishable

Question 6

Fecal flotation from a pig

50–60 x 21–25 µm

Identify the genus and species

Answer 6

Trichuris suis

Question 7

Fecal flotation from a pig

40–50 x 20–35 µm

Identify the genus and species

Answer 7

Strongyloides ransomi

Question 8

Fecal flotation from a pig

51–63 x 33–42 µm

Identify the genus

Answer 8

Metastrongylus

Question 9

Fecal sedimentation from pig

67–110 x 40–65 µm

Identify the genus and species

Answer 9

Macracanthorhynchus hirudinaceus