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Flashcards in FEC practical Deck (41):
1

2 common adult worms in puppies - describe eggs

Toxocara and Toxascaris - similar in gross appearance, typical strongyle egg size (80micrometers), both round

2

Description of adult Toxocara and Toxascaris appearance

Both large (up to 10cm), thick, cream-coloured nematodes

3

Size of liver fluke egg

140 micrometers, operculum releases ciliated miracidium

4

Where do adult liver flukes live? What do they do/cause?

Bile duct. Suck blood (causes anaemia if many are present)

5

IH - liver fluke

Snail

6

Size - Eimeria/coccidian oocyts

Small, 20-30micrometers long

7

Size - Nematodirus battus eggs

Large - 160 micrometers

8

Are coccidian or strongyle eggs most likely linked with diarrhoea in lambs in June?

Coccidia - Strongyle eggs would only be starting to build up in June.

9

Name different nematodes of horses that produce strongyle eggs

Quite a few different nematodes - include large (Strongylus spp) and small redworms (many different genera)

10

What are helminths?

Cestode, nematodes and/or trematodes

11

Ruminant helminths - 7

Strongyles, Nematodirus, Strongyloides, Trichuris, Fasciola, Dicrocoelium and Moneizia

12

Do you find lungworm eggs in ruminant faeces?

No - the eggs hatch before they are passed so larvae are found in the faeces

13

Horse helminths - 7

Strongyle, Dictyocaulus, Strongyloides, Oxyuris, Parascaris, Fasciola, Anoplocephala

14

Pig helminths - 3

Strongyles, Ascaris, Trichuris

15

Dog and cat helminths - 7

Strongyle, Toxocara, Toxascaris, Trichuris, Capillaria, Taenia, Dipylidium

16

Poultry helminths - 4

Strongyle, Syngamus, Ascarid, Capillaria

17

Why is it difficult to define the significance of particular FECs? 3

Many variables:
-different worm spp produce different numbers of eggs daily (Ostertagia - few, Haemonchus - many)
-faecal volume
-immune and reproductive status of host et

18

What are guideline egg counts for moderate and high levels?

MODERATE: 500 e.p.g. (eggs per gram)
HIGH >1000 e.p.g.

19

Which strongyle worms produce strongyle eggs in ruminants? 5

Ostertagia, haemonchus, trichostrongylus, cooperia, chabertia etc

20

How can Nematodirus battus be differentiated from other nematodirus spp?

N.battus is brownish with flat sides

21

Distinguish Strongyloides from Strongyle eggs

Small and rounder than a strongyle egg, larvated

22

Appearance - trichuris

Brown, barrel shaped, plug at each end

23

Appearance - fasciola

Large, ovoid, operculate, brown, contain yolk cells

24

Appearance - Dicrocoelium

Small, dark brown, thick shelled, asymmetrical eye spots

25

Appearance - Moniezia eggs

Squarish with pyriform apparatus

26

Strongyles in horses - 3

T. axei, strongylus spp, cyathostomes

27

Difference between Dictyocaulus and Strongyle eggs

Dictyocaulus = like a strongyle egg but larvated

28

Appearance - Oxyuris

Operculate, asymmetrical ovoid

29

Appeance - Parascaris

thick shell with albuminous coat, brown

30

Appearance - Anoplocephala (horse)

Like ruminant Moniezia - squarish with pyriform apparatus

31

Strongyles in pigs - 2

Hyostrongylus and Oesophagostomum

32

Appearance - Ascaris

Similar to Parascaris (horse) - thick shell with albuminous coat, brown

33

What do Strongyle eggs in cat/dog faeces indicate?

Hookworm infection (Uncinaria or Ancylostoma)

34

Distinguish Toxocara and Toxascaris eggs

TOXOCARA - thick shell, pitted surface, v dark brown
TOXASCARIS - smooth ascarid egg, thick shell, clear

35

What egg is Capillaria (dog/cat) similar to)

Trichuris (brown, barrel shaped with a plug at each end) but greenish in colour

36

Examples of Taeniid egg producers in dogs/cats

Taenia and Echinococcus

37

Appearance - Taeniid eggs

Small, round, thick shell with radial striations

38

Difference between Taeniid and Dipylidum eggs (Cats/dogs)

Dipylidium eggs are like taeniid eggs (small, round, thick shell with radial striations) but appear as a cluster inside a capsule

39

Strongyle egg producers - poultry - 2

Trichostrongylus and Amidostomum

40

Appearance - Syngamus (poultry) egg

Like a strongyle egg but has a cap at each end

41

Appearance - ascarid eggs (poultry)

Smooth ascarid egg, thick shell, clear. Not possible to distinguish Ascaridia and Heterakis