Brainscape's Knowledge GenomeTM

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


See full index

ASC305 exam folder > Ruminant nematodes > Flashcards

Ruminant nematodes Flashcards

1
Q

Name a common sheep nematode (common & scientific name), where it resides in the host and draw its lifecycle…

A

Barber’s pole worm (Haemonchus contortus) - abomasum

lifecycle slide 20…

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

How much do nematode problems cost Vic, SA & Riverina annually?

A

66 million!

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

Name a common cattle nematode (common & scientific name), where it resides in the host and draw its lifecycle…

A

Ostertagia ostertagi - abomasum

lifecycle slide 23…

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

Define hypobiosis…

A

arrested stage of development

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

Name a common horse nematode (common & scientific name), where it resides in the host and draw its lifecycle…

A 
Small strongyles (cyathostomins) - large intestines (adults)
lifecycle slide 28...
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Principles of diagnosing nematode burdens…?

A

may have to listen to lecture…

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

Define WHP…

A

Witholding period - minimum period of time that must elapse BETWEEN LAST ADMINISTRATION OR APPLICATION of vet chemical product & treated feed & SLAUGHTER OR USE FOR HUMAN CONSUMPTION

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

Define ESI…

A

Export slaughter interval - the time which should elapse between administration of a veterinary chemical to animals and their slaughter for export.

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

Name 3 broad spectrum anthelmintics…

A

Benzimidazoles (‘white’ drenches)
Levamisole (‘clear’ drenches)
Macrocyclic lactones (IVERMECTIN etc.)

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

Name 3 narrow-spectrum sheep anthelmintics & state what they treat…

A

closantel - barber’s pole
Triclabendazole - Fasciola hepatica (liver fluke)
praziquantel - cestodes

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

Discuss the factors that lead to selection for anthelmintic resistance…

A

Fecal Egg Count Reduction Test (FECRT)
Worm egg count (WEC) & find young animals to test
treat some & not others (control)
resample & WEC/larval diff within PPP
check reduction in WEC = drench efficiency

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

Principles of diagnosis of nematode burdens…

A

fecal sample egg counts
larval culture & differentiation
morphological ID - microscopy
fecal flotation technique

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

How would you monitor success in reducing anthelmintic resistance?

A

DrenchCheck day 10:
WEC & larval culture pre-treatment
WEC & larval culture 10 - 14 days after treatment

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

Major anthelmintic groups for sheep and current resistance levels for these groups… (Benzimidazoles ‘white’ drenches)

A

More than 90% of farms with resistant worms

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

Major anthelmintic groups for sheep and current resistance levels for these groups… Clear (levamisole) drenches

A

More than 90% of farms with resistant worms

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

Major anthelmintic groups for sheep and current resistance levels for these groups… BZ/lev combination drenches

A

More than 60% of farms with resistant worms

17
Q

Major anthelmintic groups for sheep and current resistance levels for these groups… Closantel

A

Definite resistance in barber’s pole worm

ASC305 exam folder (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions