Oesophagostomum spp Flashcards Preview

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Flashcards in Oesophagostomum spp Deck (15):
1

common name

nodular worm

2

hosts

cattle, sheep, goats

3

characteristics

white nematode
large cephalic vesicle

4

size of adult

2.5cm

5

____stage larvae in the small and large intestine

4th

6

eggs

strongyloid
oval, thin shelled
85micrometers

7

life cycle direct or indirect

direct

8

life cycle

eggs hatch in feces
develop to L3
ingested and enter wall of intestine
develop to L4 in nodules
L4 emerge and develop to adult stage
male and females mate
females lay eggs

9

PPP

45d or longer

10

site of infection

adults: large intestine
L4: small or large intestine

11

pathogenesis

anorexia

12

clinical signs

rise in temperature
diarrhea
dehydration

13

diagnosis

fecal exam for eggs
necropsy

14

treatment

anthelmintics
management

15

do animals develop immunity to infection?

no