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Vet tech > Bovine parasites > Flashcards

Bovine parasites Flashcards

1
Q

What are the external arthropods that can cause disease in cattle?

A

mites, lice, ticks, flies

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2
Q

What are the general symptoms of cattle with internal parasite infections?

A

Rough hair coat, diarrhea, emaciation, weight loss, blood loss

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3
Q

Large stomach worm

A

Haemonchus placei

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4
Q

Medium stomach worm

A

Osteriagia Ostertagia

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5
Q

Large stomach worm AKA

A

Large stomach worm / barbers pole worm

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6
Q

Where are large stomach worms typically found?

A

Tropical regions

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7
Q

Medium stomach worms AKA

A

medium stomach worm / brown stomach worm

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8
Q

The medium stomach worm is considered to be what?

A

The most important parasite of cattle

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9
Q

What mechanism do medium stomach worms have to survive?

A

The switch off till the climate is right again

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10
Q

Once in the abomasal mucosa the medium stomach worms replace the glands that line the stomach with a new home, this can change the pH of the stomach to _____ witch can cause digestion to stop

A

> 6

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11
Q

This causes a protein-losing gastropathy witch results in ______________

A

hypoproteinemia

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12
Q

I am a nematode of the small intestine and I do not suck blood.

A

Cooperia spp.

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13
Q

Even though I have shown to be resistant to ____________ and ___________, I am still fairly easily killed.

A

benzimidazoles, avermectins

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14
Q

Bunostomum phlebotomum AKA

A

bovine Threadworm

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15
Q

Bovine Threadworm scientific name

A

Bunostomum phelbotomum

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16
Q

The bovine threadworm can infect cattle through ______-______ transmission, or through ________ ______________.

A

fecal-oral, skin penetration

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17
Q

Bovine threadworms can cause BOTH _________ and _________.

A

anemia, diarrhea

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18
Q

Strongyloides papillosus AKA

A

Bovine threadworm

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19
Q

Bovine threadworm scientific name

A

Strongyloides papillosus

20
Q

Bovine threadworm can infect cattle through skin penetration and ingestion. Most commonly transmitted via ____________ to calves

A

Colostrum

21
Q

Strongyloides papillosus causes a specific type of diarrhea, what is it?

A

intermittent diarrhea

22
Q

nematodirus Helvetianus AKA

A

parasitic roundworms

23
Q

Parasitic roundworms like to accumulate in pastures and hatch after ______. This is to produce ________ __________ rapidly.

A

rain, heavy infections

24
Q

Nematodirus Helvetianus like to accumulate roughly ___-___ft from the _________.

A

10-20, pylorus

25
Q

Why are parasitic roundworms difficult to diagnose?

A

Adult worms dont pass many eggs

26
Q

How is Toxocara vitulorum transmitted?

A

Through milk

27
Q

What age group does Toxocara vitulorum like

A

Calves less than 6 months old

28
Q

Oesophagostomum radiatum AKA

A

nodular worm

29
Q

What clinical signs does nodular worm cause in calves.

A

Anorexia, diarrhea, weight loss, death

30
Q

Chabertia ovina AKA

A

largemouth bowl worm

31
Q

Trichuris axei AKA

A

whipworm of cattle

32
Q

Whipworms tend to infect _______ _______ and _________

A

young calves, yearling

33
Q

Trichuris axei eggs are resistant causing what?

A

likely to persist on problem premises

34
Q

Moniezia expansa and Moneizia benedeni AKA

A

tapeworms of young cattle

35
Q

Describe the appearance of moniezia expansa/benedeni segments

A

Wider than they are long

36
Q

Describe how moneizia expansa/benedeni eggs are shaped.

A

triangular and rectangle

37
Q

A class of antinematodal that interferes with the worms energy at the cellular level.

A

Benzimidazoles

38
Q

What 2 drugs belong in benzimidazoles and what do they kill?

A

Fenbendazole (panacur/safeguard) - lungworms
Albendazole (valbazen) - adult liver flukes and tapeworms

39
Q

Class of antinematodal that kills by interfering with the nervous system and the muscle function leading to neuromuscular paralysis and death.

A

Avermectins

40
Q

Why dont avermectins kill the worm but host the animal?

A

They work on glutamate

41
Q

Do avermectins cross the brain barrier?

A

no unless given in a high dosse

42
Q

what 3 drugs belong to the avermectin class and what do they kill?

A

Ivermectin (ivomec) - roundworms, lungworms cattle grubs, sucking lice, mites
Moxidectin (cydectin pour-on) - roundworms, lungworms, cattle grubs, mites, lice, horn flies
Eprinomectin (eprizero) - roundworms, cattle grubs, lice, mange mite, lung worms

43
Q

What drug from the avermectin class has no withdrawal period?

A

Eprinomectin

44
Q

Class that can be used to treat coccidian and other protozoans if they are present

A

antiprotozoals

45
Q

what is the most prevalent protozoan in cattle?

A

Eimeria bovis

46
Q

Which drug from antiprotozoals can be used in calves?

A

Decoquinate (deccox)

47
Q

Which antiprotozoal drug can easily be used in both calves and adults?

A

amprolium (corid)

Vet tech (26 decks)

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