How is Ostertagia transmitted? - ProProfs Discuss
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How is Ostertagia transmitted?



A. Ingestion only
B. CLM
C. OLM

This question is part of Strongyles
Asked by OBrienEE, Last updated: Jan 15, 2020

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2 Answers

i.Rubiny

I.Rubiny

Answered Oct 04, 2017

Ostertagia is transmitted by ingestion only. Adults in the abomasum lay eggs that pass in faeces. Once hatched, larvae undergo two moults to become infective third-stage larvae, which migrate onto herbage and are ingested by grazing cattle. Once ingested, these parasitic larvae grow and moult twice more to become egg-laying adults.

Environmental conditions of cold or excessive dryness may trigger a condition known as hypobiosis, in which larval development is arrested so that maturation may take several months. Prepatent period is 17 to 21 days. Brown stomach worm is a widespread parasite of cattle. Affected cattle not only lose weight but often die of overwhelming clinical ostertagiasis.

 

OBrienEE

OBrienEE

Answered Aug 28, 2017

Ingestion only
 

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