Haemonchus placei Flashcards Preview

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Flashcards in Haemonchus placei Deck (14):
1

common name

barber pole worm

2

host

cattle

3

site of infection

abomassum

4

size of adults

2-3 cm

5

eggs size

85 micrometers

6

egg characteristics

trichostrongyloid
oval, thin shelled

7

life cycle direct or indirect

direct

8

life cycle

eggs pass in feces
develop in feces to L3
L3 ingested during grazing
L3 develops to L4 in abomassum
L4 develop to adult
males and females mate
females lay eggs

9

_____ encysts in abomasum wall when conditions outside are unfavorable

L4

10

PPP

23-28 days

11

pathogenesis

acute hemorrhagic anemia
in heavy infections death may occur- hemorrhagic gastritis

12

clinical signs

hyperacute cases- calves may die
bottle jaw
lethargy
weight loss
weakeness

13

diagnosis

history, clinical signs, fecal worm egg count, necropsy

14

treatment

anthelminitics