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External & Internal Parasites. Jake Everhart May 16, 2001. Modified by Georgia Agricultural Education Curriculum Office June 2002. Symptoms of Parasitic Infestation. Parasites to the stomach and intestines cause: Anemia Scouring Depression Death. Description of Parasitic Infestation.

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external internal parasites

External & Internal Parasites

Jake Everhart

May 16, 2001

Modified by Georgia Agricultural Education Curriculum Office

June 2002

symptoms of parasitic infestation
Symptoms of Parasitic Infestation
  • Parasites to the stomach and intestines cause:
  • Anemia
  • Scouring
  • Depression
  • Death
description of parasitic infestation
Description of Parasitic Infestation
  • Roundworms:
  • Found in the digestive system
  • Most important parasites from an economic standpoint
  • Mostly in stomach and intestines
stomach worm
Stomach Worm
  • Several species of stomach worm
  • Twisted stomach worms and brown stomach worms are the most important.
  • Found in all classes of livestock
  • Most common in cattle, sheep and horses.
  • Penetrates the stomach lining
  • Causes severe damage
calf scours
Calf Scours
  • Diarrhea
  • Two main forms
  • Hypersecretion
  • Malabsorption
  • Result of Diarrhea
  • Dehydration
  • Dryed out mouth
strongyles
Strongyles
  • Several species
  • Attack all species
  • Greater affect on young
  • Blood sucking parasites that attach to the lining of the intestines
ascarids
Ascarids
  • Parasites of cattle, sheep, horses and hogs
  • Affects young mostly
  • The larvae burrow into the wall of the intestines and migrate through the liver, heart, and finally the lungs
description of external parasites
Description of external parasites
  • Mites and mange
  • Mites are a live parasite
  • Mange is a live fungus