Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Livestock Diseases > Last years exam 2 > Flashcards

Last years exam 2 Flashcards

1
Q

The mycotoxin that is recognized for its vasoconstrictive effects (blood vessel constriction) which may lead to lameness is:

-Ochratoxin
-All choices are correct
-Vomitoxin
-Ergot
-Zearalenone

A

Ergot

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Sweet clover poisoning is due to:

-Antagonism of the action of Vitamin K
-Moldy sweet clover
-Dicoumarin
-All choices are correct

A

All choices are correct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Nitrate poisoning can result from:

-Fertilizing pastures without removing animals
-Conversion of nitrates to nitrites by rumen microorganisms
-All choices are correct
-Careless discarding of fertilizer bags

A

All choices are correct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

House flies:

-Have a life cycle that lasts one year
-Lay eggs in fresh manure and decaying organic material
-Require an intermediate host
-Have piercing mouth parts
-Are three host parasites

A

-Lay eggs in fresh manure and decaying organic material

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Large strongyles infestations of horses:

-May be expressed clinically in the form of colic
-All choices are correct
-Are a common occurrence in horses in Nebraska
-Can be controlled by good pasture management and the use of anthelmintic
-Can cause damage to the circulatory system of the host

A

All choices are correct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

(T/F) Mosquitoes are most effectively controlled by destroying breeding areas

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

(T/F) Face flies and horn flies deposit their eggs only in fresh manure

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

(T/F) Animals infected with Psoroptic scabies require immediate quarantine and treatment.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

(T/F) A two host tick requires two hosts to complete its life cycle.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The infective larval stage of the bovine abomasal parasite, Ostertagia spp. is:

-L4
-L2
-L3
-L1
-L5

A

L3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Sheep keds are:

-Require multiple hosts
-Ticks
-Flies without wings
-Have little effect on wool quality

A

Flies without wings

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Horn flies:

-Spend most of their “me on the host Lay eggs in fresh manure
-All choices are correct
-May be effectively controlled using self application devices (dust bags)
-May be a problem in cattle on pasture

A

All choices are correct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

The goals of parasite control includes:

-Prevent heavy parasite exposure to susceptible hosts -Encourage development of immunity to host
-Reduce pasture contamination
-All choices are correct
-Minimize the effects of parasite burden in the host

A

All choices are correct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Lice:

-May be controlled by vaccination
-survive only a short time off the host
-Are transmi!ed primarily by a contaminated environment Have been eradicated from the Midwest
-All choices are correct

A

survive only a short time off the host

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Abomasal parasite control measures include:

-Sanitation
-Rotational grazing
-Anthelmintics
-All choices are correct
-Decreasing stocking density

A

All choices are correct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The major effect of mycotoxicoses on affected animals is:

-Feed refusal
-Abortion
-Coma
-Infertility
-Death

A

Feed refusal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Selenium toxicity:

-Affects cattle
-May cause hair loss and abnormal hoof growth
-May result in lameness
-All choices are correct
-Affects horses

A

All choices are correct

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

(T/F) Liver flukes are especially important in the desert Southwest.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

(T/F) Spraying is an effective method for control of large strongyles in horses.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

(T/F) The adult stage of a parasite is usually more destructive to the host than is the larval stage.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

(T/F) Horn flies are relatively easier to control than are face flies.

A

True

22
Q

(T/F) Tail-rubbing is a classical sign of pinworm infestation in horses.

A

True

23
Q

(T/F) House flies and stable flies deposit their eggs only in fresh manure.

A

False

24
Q

Urea:

-Urea toxicity may result from excess urea in feed
-Clinical signs are acute
-Ruminants need to be acclimated to non-protein nitrogen
-Is an inexpensive form of protein for ruminants
-All choices are correct

A

All choices are correct

25
Q

Which of the following is required for an agent to be infectious?

A

All choices are correct

26
Q

(T/F) Understanding the life cycle of a parasite is not necessary for effective control.

A

False

27
Q

Lice:

-All choices are correct
-Infestations are economically important
-Tend to be host specific
-Entire life cycle occurs on the host
-Prefer cold weather

A

All choices are correct

28
Q

(T/F) Cattle grubs are the immature larval form of Warble flies

A

True

29
Q

(T/F) Heel flies have a very painful bite and are voracious blood feeders.

A

False

30
Q

(T/F) The life cycle of the Warble fly requires a year to complete.

A

True

31
Q

(T/F) The biting mouth parts of face flies may cause damage to the cornea and contribute to the development of bovine pinkeye.

A

False

32
Q

(T/F) Sanitation and manure management is the key controlling stable and house flies.

A

True

33
Q

A parasitoid is:

-A trapping device for parasites
-A feed additive for parasite control
-A parasiticide such as pyrethroid
-A miniature wasp

A

A miniature wasp

34
Q

(T/F) Sheep bots develop and mature within the stomach, similar to horse bots.

A

False

35
Q

The abomasal parasites of sheep and cattle include:

-Ostertagia, Nematodirus, Trichostrongylus
-Ostertagia, Cooperia, Trichostrongylus
-Cooperia, Nematodirus, Haemonchus
-Haemonchus, Ostertagia, Trichostrongylus

A

Haemonchus, Ostertagia, Trichostrongylus

36
Q

(T/F) Part of the Ascarid life cycle involves migra”on through the lung.

A

True

37
Q

(T/F) Inactivated vaccines generally induce immunity of shorter duration than the immunity induced by living vaccines.

A

True

38
Q

(T/F) All antibiotics have the same mechanism of action on bacterial cells.

A

False

39
Q

(T/F) Passive immunity from colostrum consumption lasts longer than active immunity from natural infection or from vaccination.

A

False

40
Q

Viruses generally have the ability to remain infectious in the environment longer than bacteria.

A

False

41
Q

(T/F) Viruses may be visualized using a light microscope

A

False

42
Q

(T/F) Prions are susceptible to or destroyed by most commonly used disinfectants.

A

False

43
Q

(T/F) Antibiotics are equally effective against bacterial and viral infections.

A

False

44
Q

(T/F) Disinfectants are designed to be used on living tissue

A

False

45
Q

Characteristics of viral infections in animals include:

-Elevated body temperature (fever)
-Not responsive to antibiotic treatment
-All choices are correct
-Lack of “pus” formation
-Rapid onset

A

All choices are correct

46
Q

Bacterial spores are:

-Resistant to certain disinfectants.
-All choices are correct
-Dormant structures.
-Aids in the survival of the bacterium.

A

All choices are correct

47
Q

Which of the following is the best choice for the disinfection of a scalpel between animals when castrating?

-Formaldehyde solution
-Sunlight
-Chlorine (Chlorox)
-Boric acid
-Phenolic compound

A
48
Q

Characteristics of the disinfectant, chlorine, include:

-Inexpensive and effective at a low concentration -Activity is inhibited by organic material
-All choices are correct
-Has a broad spectrum of activity against pathogens
-Corrosive, but kills spores

A

All choices are correct

49
Q

Non-specific host defense mechanisms include:

-Phagocytosis
-Neutrophils
-Interferon
-All choices are correct
-Lysozyme

A

Phagocytosis

50
Q

All of the following protozoal infections are important in North America except:

-Trypanosomiasis
-Coccidiosis
-Trichomoniasis
-Cryptosporidiosis

A

Trypanosomiasis

Livestock Diseases (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions