Page 167 - The Veterinary Laboratory and Field Manual 3rd Edition

136 Susan C. Cork and Mani Lejeune

Figure 3.17 The microscopic appearance
of parasite eggs commonly found in the
faeces of ruminants. (A) Nematodirus
sp., (B) Strongyle type (Osteragia sp.,
Trichostrongylus sp. etc.), (C) Chabertia sp.,*
(D) Oesophagostomum sp., (E) Strongyloides
sp., (F) Neoascaris sp. (Toxocara vitulorum),
(G) Trichuris sp., (H) Fasciola sp.
(liver fluke), (I) Paramphistonum sp., (L)
Capillaria sp., (M) Moniezia sp. (tapeworm
with six hooked oncosphere), (N) Dicrocoelium
sp. (fluke containing miracidium). Illustration:
Louis Wood. See also Plates 2a, 2b, 3 and 4.
Note: *Gaigeria pachysalis which closely resembles
Bunostomum sp., is found in sheep and goats and
is a voracious blood sucker, as few as 100–200 adult
worms are sufficient to produce death in sheep
within a few months of infection.

Figure 3.18 The microscopic appearance of parasite eggs commonly found in the faeces of poultry.
(A) Syngamus trachea (gapeworm), (B) Ascaridia sp., (C) Heterakis sp., (D) Capillaria sp., (E) tapeworm
eggs (Davainea sp., Raillietina sp.). Coccidial oocysts are also frequently found in poultry faeces and are
usually numerous but smaller than helminth eggs. Illustration: Louis Wood. See also Plates 2a, 2b and 3.

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