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5 Written questions

4 Matching questions

  1. ascaris suum
  2. anaplocephala
  3. strongyloides westeri
  4. large strongyles
  1. a treat pigs with ivome, dectomax or safeguard.
  2. b adults are large, segmented with scolex at anterior end. Up to 8 m long. Eggs are irregularly shaped and contain 6 hooked larva. Similar to monezia in ruminants.
  3. c adults live in large bowel, pass eggs in feces. Ingested by horse and penetrate teh gut wall. Migrate through abdomen. Enter the mesenteric artery and cause verminous arteritis.
  4. d often see no clinical signs. Young foals show more signs; acute diarrhea, coughing. Skin lesions are very rare.

5 Multiple choice questions

  1. adults are rarely seen, live in the nuchal ligament and sometimes ligament and tendons of distal extremeties. Microfilaria found in conjunctiva and skin.
  2. used to be an important zoonotic disease but not so common now due to public awareness.
  3. adult females can be annoying. Larva in stomach can rarely cause ulcerations. Most time no clinical signs are present. Often infection is determined on post mortem exams.
  4. are a potentially zoonotic parasite if humans ingest infested eggs.
  5. adults are medium sized with prominent buccal capsule with teeth around its top and its base. Ova have a thin, smooth shell with few shells when passed in feces. Indistinguishable from small strongyle ova.

5 True/False questions

  1. strongyloides westeriequine threadworm.


  2. strongyloides westeriadults are very small 2-9 mm long. Ova are thin shelled, oval and larvated.


  3. sarcoptic mangeoccurs in pigs as well as other livestock species. Not as common anymore.


  4. oxyuris equifemales produce a large number of eggs that are very resistant to environmental conditions. Adults live in small intestines. Penetrate gut and travel thru blood to lungs and enter airways. Coughed up and swallowed into the gut where they become adults.


  5. oxyuris equiadults live in large intestine. They mate, males die and females move into the rectum. Horses ingest infected larvated eggs.