EQUINE MEDICINE
Endoparasites
Endoparasites
• Internal parasites
• Protozoa
• Roundworms
• Flatworms
• Clinical signs
• Weight loss
• Poor hair coat
• W...
Endoparasites
• Life Cycle
• Host
• Parasite
• Protozoa
• Nematodes
• Cestodes
• Trematodes
Cyathostomes
• Small Strongyles
• Hibernate in intestinal wall
• Severe diarrhea
• Weight loss
• Mild colic
Strongylus vulgaris
• Large Strongyles
• Large Redworms
• Vessel migration
• Colic
• Unthriftiness
• Diarrhea
Parascaris equorum
• Ascarids
• Young animals
• Stunted growth
• Unthriftiness
• Lung damage
• Diarrhea
• Colic
Strongyloides westeri
• Threadworm
• Female is parasitic
• Lung migration
• Mammary glands
• Ingested by foal
Anoplocephala magna
• Tapeworms
• Cecum
• Colic/Off feed
• Diarrhea/Dehydration
• Depression/Lying
down
Gasterophilus intestinalis
• Bots
• Eggs on legs
• Larva attached to
stomach wall
• 10 months
• Ill thrift
• Weight loss
•...
Dictyocaulus arnfieldi
• Lungworms
• Donkeys-lungs-
adults
• Horses-lungs-
adults
• eggs coughed
up and
swallowed
• Clinic...
Habronema species
• Stomach worms
• Gastric
• Cutaneous
• Summer sores
• Clinical signs
• Itching
• Open sores
• Resolve i...
Oxyuris equi
• Pinworms
• Adults in cecum, colon,
rectum
• Clinical signs
• Restless
• Off feed
• Loss of condition
Equine Protozoal Myeloencephalitis
Sarcocystis neurona
• EPM
• 2 intermediate hosts
• Opossum
• Birds, cats
• Clinical sig...
Onchocerca cervicalis
• Onchocerca
• Intermediate host
• Clinical signs
• Masses under skin
• Lameness
• Edema
• Eye probl...
Thelazia lacrymalis
• Eye Worms
• Intermediate host
• Face fly
• Clinical signs
• Mild irritation
• Possible blindness
Prevention and Control
• Sanitation
• Feed
• Water
• Physical removal
• Deworming plan
Anthelmintics
• Remove adults
• Break life cycle
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Endoparasites

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Endoparasites

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Endoparasites

  1. 1. EQUINE MEDICINE Endoparasites
  2. 2. Endoparasites • Internal parasites • Protozoa • Roundworms • Flatworms • Clinical signs • Weight loss • Poor hair coat • Weakness • Colic
  3. 3. Endoparasites • Life Cycle • Host • Parasite • Protozoa • Nematodes • Cestodes • Trematodes
  4. 4. Cyathostomes • Small Strongyles • Hibernate in intestinal wall • Severe diarrhea • Weight loss • Mild colic
  5. 5. Strongylus vulgaris • Large Strongyles • Large Redworms • Vessel migration • Colic • Unthriftiness • Diarrhea
  6. 6. Parascaris equorum • Ascarids • Young animals • Stunted growth • Unthriftiness • Lung damage • Diarrhea • Colic
  7. 7. Strongyloides westeri • Threadworm • Female is parasitic • Lung migration • Mammary glands • Ingested by foal
  8. 8. Anoplocephala magna • Tapeworms • Cecum • Colic/Off feed • Diarrhea/Dehydration • Depression/Lying down
  9. 9. Gasterophilus intestinalis • Bots • Eggs on legs • Larva attached to stomach wall • 10 months • Ill thrift • Weight loss • Colic
  10. 10. Dictyocaulus arnfieldi • Lungworms • Donkeys-lungs- adults • Horses-lungs- adults • eggs coughed up and swallowed • Clinical signs • Coughing • Nasal discharge • High respiratory rate
  11. 11. Habronema species • Stomach worms • Gastric • Cutaneous • Summer sores • Clinical signs • Itching • Open sores • Resolve in winter
  12. 12. Oxyuris equi • Pinworms • Adults in cecum, colon, rectum • Clinical signs • Restless • Off feed • Loss of condition
  13. 13. Equine Protozoal Myeloencephalitis Sarcocystis neurona • EPM • 2 intermediate hosts • Opossum • Birds, cats • Clinical signs • Stumbling • Muscle wasting • Mild lameness
  14. 14. Onchocerca cervicalis • Onchocerca • Intermediate host • Clinical signs • Masses under skin • Lameness • Edema • Eye problems
  15. 15. Thelazia lacrymalis • Eye Worms • Intermediate host • Face fly • Clinical signs • Mild irritation • Possible blindness
  16. 16. Prevention and Control • Sanitation • Feed • Water • Physical removal • Deworming plan
  17. 17. Anthelmintics • Remove adults • Break life cycle
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