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Alimentary > FEC practical > Flashcards

FEC practical Flashcards

1
Q

2 common adult worms in puppies - describe eggs

A

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

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2
Q

Description of adult Toxocara and Toxascaris appearance

A

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

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3
Q

Size of liver fluke egg

A

140 micrometers, operculum releases ciliated miracidium

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4
Q

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

A

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

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5
Q

IH - liver fluke

A

Snail

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6
Q

Size - Eimeria/coccidian oocyts

A

Small, 20-30micrometers long

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7
Q

Size - Nematodirus battus eggs

A

Large - 160 micrometers

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8
Q

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

A

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

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9
Q

Name different nematodes of horses that produce strongyle eggs

A

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

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10
Q

What are helminths?

A

Cestode, nematodes and/or trematodes

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11
Q

Ruminant helminths - 7

A

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

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12
Q

Do you find lungworm eggs in ruminant faeces?

A

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

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13
Q

Horse helminths - 7

A

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

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14
Q

Pig helminths - 3

A

Strongyles, Ascaris, Trichuris

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15
Q

Dog and cat helminths - 7

A

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

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16
Q

Poultry helminths - 4

A

Strongyle, Syngamus, Ascarid, Capillaria

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17
Q

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

A

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
Q

What are guideline egg counts for moderate and high levels?

A

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

HIGH >1000 e.p.g.

19
Q

Which strongyle worms produce strongyle eggs in ruminants? 5

A

Ostertagia, haemonchus, trichostrongylus, cooperia, chabertia etc

20
Q

How can Nematodirus battus be differentiated from other nematodirus spp?

A

N.battus is brownish with flat sides

21
Q

Distinguish Strongyloides from Strongyle eggs

A

Small and rounder than a strongyle egg, larvated

22
Q

Appearance - trichuris

A

Brown, barrel shaped, plug at each end

23
Q

Appearance - fasciola

A

Large, ovoid, operculate, brown, contain yolk cells

24
Q

Appearance - Dicrocoelium

A

Small, dark brown, thick shelled, asymmetrical eye spots

25
Q

Appearance - Moniezia eggs

A

Squarish with pyriform apparatus

26
Q

Strongyles in horses - 3

A

T. axei, strongylus spp, cyathostomes

27
Q

Difference between Dictyocaulus and Strongyle eggs

A

Dictyocaulus = like a strongyle egg but larvated

28
Q

Appearance - Oxyuris

A

Operculate, asymmetrical ovoid

29
Q

Appeance - Parascaris

A

thick shell with albuminous coat, brown

30
Q

Appearance - Anoplocephala (horse)

A

Like ruminant Moniezia - squarish with pyriform apparatus

31
Q

Strongyles in pigs - 2

A

Hyostrongylus and Oesophagostomum

32
Q

Appearance - Ascaris

A

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

33
Q

What do Strongyle eggs in cat/dog faeces indicate?

A

Hookworm infection (Uncinaria or Ancylostoma)

34
Q

Distinguish Toxocara and Toxascaris eggs

A

TOXOCARA - thick shell, pitted surface, v dark brown

TOXASCARIS - smooth ascarid egg, thick shell, clear

35
Q

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

A

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

36
Q

Examples of Taeniid egg producers in dogs/cats

A

Taenia and Echinococcus

37
Q

Appearance - Taeniid eggs

A

Small, round, thick shell with radial striations

38
Q

Difference between Taeniid and Dipylidum eggs (Cats/dogs)

A

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

39
Q

Strongyle egg producers - poultry - 2

A

Trichostrongylus and Amidostomum

40
Q

Appearance - Syngamus (poultry) egg

A

Like a strongyle egg but has a cap at each end

41
Q

Appearance - ascarid eggs (poultry)

A

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

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