In previously exposed sheep, O. columbianum can cause "pimply gut". What is this?

Nodules around larvae caseate and calcify

Thickened congested bowel/colon

Which type of nodular worm is a serious pathogen of cattle?

O. radiatum - acute and chronic

O. venulosum - acute and chronic

Quiz

Caitlin Wringe 6 questions Updated 26 Sep 2019

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1Which species of worm have a leaf crown?
1. AO. colombianum
2. BO. radiatum
3. CO. venulosum
4. DChabertia ovina
2Once the infective L3 exsheaths, where does it penetrate and encyst?
1. AIntestinal wall
2. BGastric glands
3. CGut wall
4. DLung epithelium
3In previously exposed sheep, O. columbianum can cause "pimply gut". What is this?
1. ANodules around larvae caseate and calcify
2. BPeritonitis
3. CGut epithelium necrosis
4. DThickened congested bowel/colon
4Which species of Oesaphogostomum causes pimply gut? Does this occur in previously exposed or unexposed sheep?
1. AO. columbianum - unexposed
2. BO. radiatum - exposed
3. CO. venulosum - exposed
4. DO. columbianum - exposed
5Which species of Oesophagostomum is considered to be of low pathogenicity?
1. AO. venulosum
2. BO. radiatum
3. CO. columbianum
6Which type of nodular worm is a serious pathogen of cattle?
1. AO. radiatum - acute and chronic
2. BO. venulosum - acute and chronic
3. CChabertia ovina - acute
4. DO. columbianum - chronic