RVT- Endoparasites of Cattle, Sheep and Goats

Question 1

What kind of egg would T. ovis produce?

Answer 1

Trichinoilloid - Just like in horses and small animals

Question 2

Which parasite would cause ‘frank’ blood to appear in its feces?

Answer 2

Trichuris ovis

Question 3

What is the common name for Strongyloides papillosus in cattle, sheep and goats?

Answer 3

Threadworm

Question 4

How is S. papillosus spread from animal to animal?

Answer 4

Fecal/oral
Transcutaneous
Transmammary

Question 5

Which parasite in sheep, cattle and goats can cause acute diarrhea and death?

Answer 5

Nematodirus spathiger

Question 6

What is the only trichostrongyle egg we will be able to tell apart from other trich eggs?

Answer 6

Nematodirus 200x90

Question 7

What kind of parasite is Bunostomum and where is it found in its host?

Answer 7

Hookworm

Small intestines

Question 8

What is the life cycle of Bunostomum?

Answer 8

Direct life cycle

Infects host by ingestion of infective larvae and skin penetration

Question 9

What is the common name for Dictyocaulus viviparus amd

Dictyocaulus filaria?

Answer 9

Lungworm of cows (vivi)

Lungworm of sheep(filaria)

Question 10

What roundworm is mostly found in the tropics but has been found in Bison populations out west?

Answer 10

Toxocara vitulorum

Question 11

What is the definitive host of T. vitulorum?

Answer 11

Cattle, bison, water buffalo

Question 12

What is the common name for Parelaphostrongylus tenuis?

What is its definitive host?

Answer 12

Meningeal worm

White tailed deer

Question 13

What animal is T. tenuis found in?

Answer 13

White tailed deer

Alpaca and llama

Question 14

What parasite is responsible for killing moose?

Answer 14

Parelaphostrongylus tenuis ( meningeal worm)

Question 15

What is the intermediate host for the ‘surface of the brain’ worm?

Answer 15

Parelaphostrongylus tenuis worm - snail

Question 16

What is the common name for Moniezia and where is it found in the definitive host?

Answer 16

Tapeworm

Small intestines

Question 17

What is the intermediate host for Moniezia?

Answer 17

Pasture mite

Question 18

Which parasite of cattle, sheep and goats is capable of hypobiosis?

Answer 18

Haemonchus contortus
Trichostrongyles axei
Cooperia

Question 19

Which parasites are associated with ‘bottle jaw’

Answer 19

Haemonchus contortus

Trichostrongylus axei

Question 20

What are the 3 common names for Haemonchus contortus?

Answer 20

Barber pole worm
Wire worm
Blood worm

Question 21

What is the definitive host of H. contortus and where is it found in the animal?

Answer 21

Sheep, cattle and goats

* Abomasum

Question 22

What are the clinical signs of haemonchus?

Answer 22

Enemia
‘Bottle jaw’
-removes protein from the blood, veracious bloodsucker

Question 23

What is the life cycle of Haemonchus?

Answer 23

Direct life cycle
PPP - 3 weeks
Hypobiosis

Question 24

How is wire worm diagnosed?

Answer 24

Fecal flotation (trichostrongyle egg)
Culture 10-14 days
FAMACHA test

Question 25

What are the common names for Teladorsagia and Ostertagia?

Answer 25

Brown stomach worm

Question 26

What is the definitive host for Teladorsagia?

Answer 26

Sheep and goats

Question 27

What is the definitive host for Ostertagia?

Answer 27

Cattle

Question 28

Which parasite causes a 'moraccan leather' appearance to the abamasum of a cow?

Answer 28

Brown stomach worm - Ostertagia

Question 29

Trichostrongylus axei found in cattle is also called.......

Answer 29

Stomach hair worm

Question 30

What are the clinical signs of Trichostrongylus axei in ruminants?

Answer 30

Diarrhea Dehydration Bottle jaw

Question 31

What is the common name for Cooperia?

Answer 31

Cattle bankrupt worm

Question 32

Where is Trichuris ovis found in sheep, cattle and goats?

Answer 32

Cecum and large intestines

Question 33

What are the clinical signs of threadworm in cattle sheep and goats?

Answer 33

Young animals - diarrhea, verminous pneumonia

Question 34

What is the common name for Muellerius capillaris?

Answer 34

Lungworm of sheep and goats

Question 35

What is the intermediate host of Muellerius?

Answer 35

Snail

Question 36

What are the clinical signs of D. viviparus and D. filaria and how is it diagnosed?

Answer 36

Lungworm of cattle Lungworm of sheep Baermann technique Coughing, dyspnea

Question 37

What are the clinical signs of Cooperia?

Answer 37

Roundworm of cattle Diarrhea Anorexia Poor growth

Question 38

What are some good pasture management rules to help manage parasite populations?

Answer 38

``` 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 ```

Question 39

Which endoparasites of ruminants undergo hypobiosis?

Answer 39

``` Trichostrongyles- Haemonchus contortus Ostertagia Teladorsagia Trichostrongylus Cooperia ```

Question 40

Which endoparasite can cause acute sever anemia, dehydration and death in young ruminants?

Answer 40

Bloodworm

Question 41

Which parasites require the Baermann technique for identification?

Answer 41

Dictyocaulus viviparus Dictyocaulus filaria Muellerius capillaris

Question 42

What is a GIN egg and which internal parasite of dogs and cats have an egg that looks similar?

Answer 42

Gastrointestinal nematode egg | Hookworm egg of dogs and cats

Question 43

Explain the difference in the appearance of sporulated oocysts of Isospora and Eimeria.

Answer 43

Isospora have 2 sporocysts with 4 sporozoites in each | Eimeria have 4 sporocysts with 2 sporozoites in each

Question 44

When do you use a direct fecal smear for diagnosis of parasites?

Answer 44

Looking for Trophozoites in Giardia and Eimeria