Internal Equine Parasites

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Internal Equine Parasites
2013-12-07 22:12:43
Equine Parasites

Internal Equine Parasites
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  1. What are the 3 major species of Large Strongyles?
    • Strongylus Vulgaris
    • Strongylus Edentatus
    • Strongylus Equinus
  2. Large strongyles are the _______ destructive.
  3. What is the life cycle of Large strongyles?
  4. What are the Symptoms of Large Strongyles?
    • Poor appetite
    • Rough hair coat
    • Rapid weight loss
    • Anemia
    • Fever
    • Depression
    • Weakness
    • emaciation
    • Diarrhea
    • Gangrenous enteritis
    • intestinal rupture
    • Colic
  5. Are Large Stongyles blood sucking?
    yes,  Active blood feeders
  6. Are Small Strongyles blood sucking?
  7. Why are Small Strongyles so hard to get rid of?
    They encyst themselves with scar tissue
  8. What dewormers don't work for small strongyles?
  9. Symptoms of Small Strongyles
    • Diarrhea
    • Depression
    • Rough hair coat
    • progressive weight loss
    • Emaciation
    • fever
    • colic
    • death
  10. What is another name for Ascarids?
    Large Round Worm
  11. What is significant about Ascarid eggs?
    They can last 8 years in the environment
  12. What is the life cycle of Ascarids?
    • Horse eats eggs
    • Eggs hatch in small intestine
    • Larvae enter blood, travel to liver and lungs
    • Larvae in lungs move up trachea
    • Horse coughs up larvae and are re-swallowed
    • Larvae become adults
  13. What are the Symptoms of Ascrids?
    • Decreas in gut motility
    • intestinal impaction
    • Unthriftiness
    • depression
    • pot-bellied 
    • Rough hair coat
    • no appetite
    • Dry cough and nasal discharge
    • colic and death
  14. What is the scientific name for Ascarids?
    Paracaris Equorum
  15. What is the scientific name for Threadworms?
    Strongyloides Westeri
  16. What aged horse is affected by Threadworms?
  17. How does a horse get Threadworms?
    Mothers Milk
  18. How do you prevent Threadworms?
    Deworming mare before birth
  19. What is the Migration of Threadworms?
    Intestine to lungs >damage > coughed out of lung >swallowed
  20. What are the Symptoms of Threadworms?
    • Diarrhea
    • Skin irritation
    • respiratory infection
    • weakness
    • emaciation
    • death
  21. What are Bots scientific name?
  22. What are Bots?
    Flys that lay their eggs on a horse and the larva are consumed and grow in the digestive tract of the horse
  23. What is the Bot lifecycle?
    • Eggs are licked off by horse, stimulating hatching
    • 1st Stage;  Travel in mouth invading tongue and gums,  Ulcers
    • 2nd Stage; Attach to intestinal lining;~3 weeks
    • 3rd Stage; Develop 8-10 weeks; Drop off stomach and intestines; Defecated; Dormant pupal
    • stage
    • Adult fly – 7-10 days
  24. What is the scientific name for Pinworms?
    Oxyuris Equi
  25. What is the life cycle of Pinworms?
    • Horse ingesting the infective eggs;
    • feed or water contaminated with manure
    • licking or chewing on infested fences and walls.

    • Eggs hatch in the intestines; Develop in
    • the large colon over five months; Do not penetrate or migrate into the intestinal tissue

    Female pinworms travel to the rectum and anus;  Rupture and deposit their sticky eggs on the perianal region; Eggs become the infective-stage larvae within three to five days.
  26. What is the scientific name for Lungworm?
    Dictyocaulus arnfieldi
  27. What species does it most affect?
    Donkeys and mules