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parasit exam 5 Flashcards

1
Q

4 genera involved in HOCT

A

Haemochus contortus, Ostertagia spp, Cooperia spp, Trichostrongylus spp

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2
Q

Haemochus contortus common name

A

barber pole worm, strongyle, roundworm

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3
Q

Haemochus contortus host

A

ruminants, mostly sheep

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4
Q

IH of Haemochus contortus

A

none, direct life cycle

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5
Q

Geo Distribution of Haemochus contortus

A

more common in warmer climates

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6
Q

Haemochus contortus Routes of infestations

A

direct ingestion

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7
Q

Haemochus contortus sex

A

dioecious

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8
Q

Site of infestation Haemochus contortus

A

abomasum

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9
Q

Haemochus contortus pathogenesis(3)

A

depends on immunity, blood loss anemia, edema of submandibular tissue (bottle jaw)

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10
Q

Haemochus contortus how much blood can sheep lose?

A

1/5 blood volume per day in heavy infestation, with sever dyspnea and weakness

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11
Q

Haemochus contortus DX

A

ova in feces (TASE)

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12
Q

Haemochus contortus TX

A

Benzimidazole, Ivermectin, Doramectin, Levamectin

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13
Q

Haemochus contortus PHS

A

none

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14
Q

Ostertagia species

A

ostertagi, circumcincta

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15
Q

Ostertagia spp common name

A

brown stomach worm

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16
Q

Ostertagia spp hosts (2)

A

ostertagi:cattle, cicumcincta:sheep

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17
Q

Ostertagia spp IH

A

none, direct life cycle

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18
Q

Ostertagia spa life cycle

A

Winter ostertagiosis and summer ostertagiosis

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19
Q

Ostertagia spp winter ostertagiosis

A

ingestion in fall, worm knows that it needs to winter, L4 hypo biotic stage, when warm temp will go to L5 adult stage

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20
Q

Ostertagia spp summer ostertagiosis

A

straight through life cycle

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21
Q

Ostertagia spp site of infestation

A

abomasum

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22
Q

Ostertagia spp pathogenesis(5)

A

local necrosis, ADR, dyspnea, scours, death, Morocco leather abomasum

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23
Q

most important parasite of young calves

A

Ostertagia ostertagi

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24
Q

morocco leather abomasum

A

small white nodules with worms protruding out of stomach

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25
Q

Ostertagia spp DX

A

ova in feces, larval culture

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26
Q

Ostertagia spp TX

A

Ivermectin, Doramectin, Fenbendazole

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27
Q

Ostertagia spp PHS

A

none

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28
Q

Cooperia spp

A

punctata, curtice, oncophora

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29
Q

Cooperia spp common name

A

cattle bankrupt worm

30
Q

Cooperia spp host(3)

A

oncophora:cattle, punctata:cattle, curticei:sheep, goat

31
Q

Cooperia spp IH

A

none, direct digestion

32
Q

Most common ruminant parasite genus

A

cooperia spp

33
Q

Site of infestation Cooperia spp

A

small intestines

34
Q

Cooperia spp pathogenesis

A

scours, anorexia, depressed growth, ADR, emaciation of younger calves

35
Q

Cooperia spp DX

A

ova in feces, larval culture, adult necropsy

36
Q

Cooperia spp TX

A

Fenbendazole, Ivermectin

37
Q

Cooperia spp PHS

38
Q

Trichostrongylus species(3)

A

axei, colubrifromis, vitrinus

39
Q

Trichostrongylus spp common name

A

hair worms, black scours

40
Q

Trichostrongylus spp host

A

cattle, sheep

41
Q

Trichostrongylus spp IH

A

none, direct life cycle

42
Q

Trichostrongylus spp site of infestation

A

abomasum, occasionally duodenum

43
Q

Trichostrongylus spp pathogenesis

A

none with small infestations, gastritis and scours with large infestation

44
Q

Trichostrongylus spp DX

A

ova in feces, larval culture, necropsy

45
Q

Trichostrongylus TX

A

ivermectin, fenbendazole

46
Q

Trichostrongylus PHS

47
Q

Nematodirus spp intermediate host

A

none, direct life cycle

48
Q

largest ruminant ova

A

Nematodirus spp

49
Q

Nematodirus spp site of infestation

A

small intestines

50
Q

Nematodirus spp pathogenesis (2)

A

atrophy, necrosis to small intestinal villi

51
Q

Nematodirus spp DX

A

ova in feces

52
Q

Nematodirus spp TX

A

Bendimidazole, Doramectin, Eprinomectin

53
Q

Oesophagostumum species (2)

A

columbianum, dentatum

54
Q

Oesophagostumum species host (2)

A

columbianumz;cattle, dentatum:swine

55
Q

Oesophagostumum common name

A

nodular worm

56
Q

Oesophagostumum spp intermediate host

A

none, direct life cycle

57
Q

Oesophagostumum spp life cycle

A

L4 larva in large intestines, makes nodules up to a year, emerge from nodule to lumen and develops to adult stage

58
Q

Oesophagostumum spp site of infestation

A

large intestines

59
Q

Oesophagostumum spp pathogenesis(6)

A

due to larva not adults, occasional intussusception of large intestines, acute enteritis, diarrhea, weakness, emaciation

60
Q

Oesophagostumum spp DX

A

ova in feces

61
Q

Oesophagostumum spp TX

A

fenbendazole, ivermectin

62
Q

Stephanurus dentatus common name

A

kidney worm of swine

63
Q

Stephanurus dentatus host

64
Q

Stephanurus dentatus intermediate host

65
Q

Stephanurus dentatus paratenic host

66
Q

Stephanurus dentatus life cycle

A

ingestion, live migration 4-9 months, destroys live then to kidney

67
Q

Stephanurus dentatus DX

A

TASE in urine

68
Q

Stephanurus dentatus site of infestation

A

larva:liver, adult:renal pelvis, ureters

69
Q

Stephanurus dentatus pathogenesis(4)

A

liver damage, emaciation, paralysis if larva ectopic, death

70
Q

Stephanurus dentatus DX

A

ova in urine

71
Q

Stephanurus dentatus TX

A

fenbendzole, ivermectin, levasmisole for adults

72
Q

TASE in swine urine is diagnostic for

A

Stephanurus dentatus

Parasit exam 5 (2 decks)

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