Endoparasites

1. EQUINE MEDICINE
Endoparasites

2. Endoparasites
• Internal parasites
• Protozoa
• Roundworms
• Flatworms
• Clinical signs
• Weight loss
• Poor hair coat
• Weakness
• Colic

3. Endoparasites
• Life Cycle
• Host
• Parasite
• Protozoa
• Nematodes
• Cestodes
• Trematodes

4. Cyathostomes
• Small Strongyles
• Hibernate in intestinal wall
• Severe diarrhea
• Weight loss
• Mild colic

5. Strongylus vulgaris
• Large Strongyles
• Large Redworms
• Vessel migration
• Colic
• Unthriftiness
• Diarrhea

6. Parascaris equorum
• Ascarids
• Young animals
• Stunted growth
• Unthriftiness
• Lung damage
• Diarrhea
• Colic

7. Strongyloides westeri
• Threadworm
• Female is parasitic
• Lung migration
• Mammary glands
• Ingested by foal

8. Anoplocephala magna
• Tapeworms
• Cecum
• Colic/Off feed
• Diarrhea/Dehydration
• Depression/Lying
down

9. Gasterophilus intestinalis
• Bots
• Eggs on legs
• Larva attached to
stomach wall
• 10 months
• Ill thrift
• Weight loss
• Colic

10. Dictyocaulus arnfieldi
• Lungworms
• Donkeys-lungs-
adults
• Horses-lungs-
adults
• eggs coughed
up and
swallowed
• Clinical signs
• Coughing
• Nasal discharge
• High respiratory
rate

11. Habronema species
• Stomach worms
• Gastric
• Cutaneous
• Summer sores
• Clinical signs
• Itching
• Open sores
• Resolve in
winter

12. Oxyuris equi
• Pinworms
• Adults in cecum, colon,
rectum
• Clinical signs
• Restless
• Off feed
• Loss of condition

13. Equine Protozoal Myeloencephalitis
Sarcocystis neurona
• EPM
• 2 intermediate hosts
• Opossum
• Birds, cats
• Clinical signs
• Stumbling
• Muscle wasting
• Mild lameness

14. Onchocerca cervicalis
• Onchocerca
• Intermediate host
• Clinical signs
• Masses under skin
• Lameness
• Edema
• Eye problems

15. Thelazia lacrymalis
• Eye Worms
• Intermediate host
• Face fly
• Clinical signs
• Mild irritation
• Possible blindness

16. Prevention and Control
• Sanitation
• Feed
• Water
• Physical removal
• Deworming plan

17. Anthelmintics
• Remove adults
• Break life cycle