RVT- Endoparasites of Cattle, Sheep and Goats Flashcards
What kind of egg would T. ovis produce?
Trichinoilloid - Just like in horses and small animals
Which parasite would cause ‘frank’ blood to appear in its feces?
Trichuris ovis
What is the common name for Strongyloides papillosus in cattle, sheep and goats?
Threadworm
How is S. papillosus spread from animal to animal?
Fecal/oral
Transcutaneous
Transmammary
Which parasite in sheep, cattle and goats can cause acute diarrhea and death?
Nematodirus spathiger
What is the only trichostrongyle egg we will be able to tell apart from other trich eggs?
Nematodirus 200x90
What kind of parasite is Bunostomum and where is it found in its host?
Hookworm
Small intestines
What is the life cycle of Bunostomum?
Direct life cycle
Infects host by ingestion of infective larvae and skin penetration
What is the common name for Dictyocaulus viviparus amd
Dictyocaulus filaria?
Lungworm of cows (vivi)
Lungworm of sheep(filaria)
What roundworm is mostly found in the tropics but has been found in Bison populations out west?
Toxocara vitulorum
What is the definitive host of T. vitulorum?
Cattle, bison, water buffalo
What is the common name for Parelaphostrongylus tenuis?
What is its definitive host?
Meningeal worm
White tailed deer
What animal is T. tenuis found in?
White tailed deer
Alpaca and llama
What parasite is responsible for killing moose?
Parelaphostrongylus tenuis ( meningeal worm)
What is the intermediate host for the ‘surface of the brain’ worm?
Parelaphostrongylus tenuis worm - snail
What is the common name for Moniezia and where is it found in the definitive host?
Tapeworm
Small intestines
What is the intermediate host for Moniezia?
Pasture mite
Which parasite of cattle, sheep and goats is capable of hypobiosis?
Haemonchus contortus
Trichostrongyles axei
Cooperia
Which parasites are associated with ‘bottle jaw’
Haemonchus contortus
Trichostrongylus axei
What are the 3 common names for Haemonchus contortus?
Barber pole worm
Wire worm
Blood worm
What is the definitive host of H. contortus and where is it found in the animal?
Sheep, cattle and goats
* Abomasum
What are the clinical signs of haemonchus?
Enemia
‘Bottle jaw’
-removes protein from the blood, veracious bloodsucker
What is the life cycle of Haemonchus?
Direct life cycle
PPP - 3 weeks
Hypobiosis
How is wire worm diagnosed?
Fecal flotation (trichostrongyle egg)
Culture 10-14 days
FAMACHA test
What are the common names for Teladorsagia and Ostertagia?
Brown stomach worm
What is the definitive host for Teladorsagia?
Sheep and goats
What is the definitive host for Ostertagia?
Cattle
Which parasite causes a ‘moraccan leather’ appearance to the abamasum of a cow?
Brown stomach worm - Ostertagia
Trichostrongylus axei found in cattle is also called…….
Stomach hair worm
What are the clinical signs of Trichostrongylus axei in ruminants?
Diarrhea
Dehydration
Bottle jaw
What is the common name for Cooperia?
Cattle bankrupt worm
Where is Trichuris ovis found in sheep, cattle and goats?
Cecum and large intestines
What are the clinical signs of threadworm in cattle sheep and goats?
Young animals - diarrhea, verminous pneumonia
What is the common name for Muellerius capillaris?
Lungworm of sheep and goats
What is the intermediate host of Muellerius?
Snail
What are the clinical signs of D. viviparus and D. filaria and how is it diagnosed?
Lungworm of cattle
Lungworm of sheep
Baermann technique
Coughing, dyspnea
What are the clinical signs of Cooperia?
Roundworm of cattle
Diarrhea
Anorexia
Poor growth
What are some good pasture management rules to help manage parasite populations?
Rotate pastures Avoid multiple species grazing Don't graze on dew Good nutrition Clean up feces from fields Alternate forages Healthy soil - earthworms eat ova and larvae
Which endoparasites of ruminants undergo hypobiosis?
Trichostrongyles- Haemonchus contortus Ostertagia Teladorsagia Trichostrongylus Cooperia
Which endoparasite can cause acute sever anemia, dehydration and death in young ruminants?
Bloodworm
Which parasites require the Baermann technique for identification?
Dictyocaulus viviparus
Dictyocaulus filaria
Muellerius capillaris
What is a GIN egg and which internal parasite of dogs and cats have an egg that looks similar?
Gastrointestinal nematode egg
Hookworm egg of dogs and cats
Explain the difference in the appearance of sporulated oocysts of Isospora and Eimeria.
Isospora have 2 sporocysts with 4 sporozoites in each
Eimeria have 4 sporocysts with 2 sporozoites in each
When do you use a direct fecal smear for diagnosis of parasites?
Looking for Trophozoites in Giardia and Eimeria
