Brainscape's Knowledge GenomeTM

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


See full index

PARA > OV endoparasites > Flashcards

OV endoparasites Flashcards

1
Q
A

Cephalic vesicle of nematodirus battus

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

Brown, parallel sided egg of Nematodirus battus

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

Rounded, clear-shelled egg of Nematodirus filicollis

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

Large buccal cavity

Long, thin, fused tp spicules

Nematodirus battus

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

What part of the lifecycle of Nematodirus battus causes clinical disease in sheep?

A

L5 feeding on mucosa

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

Describe the diarrhoeic syndrome associated with Nematodirus battus.

A
  1. Pathology:
    1. Catarrhal enteritis
    2. Villous atrophy
    3. Malabsorption
  2. Clinical signs
    1. Peracute explosive watery diarrhoea
    2. Anorexia
    3. Thirst
    4. Abdominal pain
    5. Wt loss
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What age group of sheep are affected by Nematodirus battus?

A

4-12 weeks old lambs

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

What management protocols can be used to reduce infection of lambs with Nematodirus battus?

A
  • Prophylactic BZs/imidazole
  • Use disease forcasts
  • Pasture rotation - reduce exposure to spring emergence of larvae
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Overwintering of Nematodirus battus larvae occurs where?

Significance?

A

On pasture - L3 within the egg

Spring emergence of larvae can cause mass diarrhoea in grazing lambs

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

What causes the spring emergence of Nematodirus battus?

A

First require a cold snap before warm temperatures (>10oC) causes hatching of eggs on pasture

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

How long do Nematodirus battus larvae stay within the egg?

A

Until they are L3

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

Large eggs present within the uterus of Nematodirus battus

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

Gut and uterus entwined in Haemonchus contortus

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

Large asymmetrical buccal cavity of Haemonchus contortus

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

Outline the lifecycle of Haemonchus contortus

A
  1. Eggs in faeces
  2. Larvated egg
  3. Hatching
  4. L2 climb up grass and are ingested by sheep
  5. Attach to abomasal mucosa
  6. Larval to adult development within abomasum
  7. Larvae may hypobiose
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Where in the sheep would Haemonchus contortus be found?

A

Abomasum

17
Q

How do Haemonchus contortus survive overwinter?

A

Hypobiosed larvae within abomasum

Larvae DO NOT survive on pasture

18
Q

FAMACHA score is used for assessment of what?

What does it score?

A

Haemonchus contortus load

Mucus membrane colour in conjunctiva

19
Q

What specific anthelmintic is used in haemonchus contortus infection?

A

Monepantel

Startect

20
Q

Barbervax is used against which ovine parasite

A

Haemonchus contortus

21
Q

Haemonchus contortus are capable of consuming how much blood from their host per day?

A

0.5ml/worm/day

22
Q

What clinical presentation is expected with Haemonchus contortus infection?

A
  • Acute haemorrhagic regenerative anaemia
  • Abomasal erosion
  • Severe hyperacute haemorrhagic gastroenteritis - sudden death
  • Wt loss
  • Submandibular oedema - hypoproteinaemia
  • Decreased PCV
23
Q
A

Taenia species armed rostellum

24
Q

The sheep is what type of host for Taenia spp?

A

Intermediate

25
Q

Treatment of Taenia spp is only useful in which type of host?

What is used?

A

Definitive host - dog

Praziquantel

26
Q

Which dog taenia metacestodes species are found in sheep?

A
  1. Ovis - cystercercus - Deep muscle
  2. Hydatigena - cystercercus - peritoneum
  3. Multiceps - coenurus - brain
27
Q

Liver condemnation is employed with infection with which type of Taenia in sheep?

A

Hydatigena - migrating cystercercus before reaching peritoneum

28
Q

Which Echinococcus spp. metacestode is found in sheep?

A

Echinococcus granulosus granunosus

Hydatid cysts in liver and lungs

29
Q

Which human taenia metacestodes species are found in pigs and cow?

A
  1. Solium - cystercercus - brain (neurocystercercosis)
  2. Saginata - metacestode - Muscle (intestinal upset)
30
Q

The sheep is the definitive host of which tapeworm species?

What is the intermediate host?

A

Monenzia spp

Cystercercoid found in oribatid mites

31
Q

Hairworm

A

Muellerius capillaris

32
Q

Sheep worm

A

Muellerius capillaris

33
Q
A

Kinked tail of L1 Muellerius capillaris

34
Q

Outline the lifecycle of Muellerius capillaris.

A
  1. Eggs in faeces
  2. Ingested by intermediate host - molluscs
  3. Develop to L3 within intermediate
  4. Sheep ingests IMH
  5. Lympho-tracheal migration of larvae
  6. Adults lay eggs in pulmonary system which are coughed up and swallowed
35
Q

True or false.

Muerllerius capillaris causes more severe disease in sheep than goats.

Outline the clinical signs.

A

False - more severe in goats

  • >6mo
  • Bronchopneumonia
  • Severe inflammatory reaction
  • SBI
36
Q

PPP of muellerius capillaris

A

1 month

PARA (16 decks)

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