Brainscape's Knowledge GenomeTM

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


See full index

Parasitology Exam 1 May 2015 > Oesophagostomum spp. (2) > Flashcards

Oesophagostomum spp. (2) Flashcards

1
Q

What are the hosts?

A

Pigs

Cattle

Sheep

Goats

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

Describe an adult

A

White

1-3 cm long

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

Describe an egg

A

Strongylid

85 micro m

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

How else do you identify Oesophagostomum spp.?

A

In large intestine

L4 - nodules in large and small intestine wall

Species

 - O. dentatum
 - O. quadrispinulatum 
 - At least 3 other species
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Describe the life cycle

A

Infective L3

Arrested L4 in small and large intestinal wall

Females lay large number of eggs

Egg -> L3 = 10 days

Low motility to L3

L3 survive on pastures

PPP: 3-8 weeks

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

What is the site of infection for adults?

A

Lumen of large intestine

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

Where are L4 found?

A

In the wall of the small and large intestine

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

Describe the Pathogenesis

A

Nodules in large intestine wall (less with O. dentatum)

Age immunity not strong (results in accumulation in older animals)

Low EPG - clinical signs pre-EPGI

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

What are the general clinical signs?

A

Anorexia

Enteritis

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

What are the clinical signs in ruminants?

A

Anorexia

Diarrhea

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

What are the clinical signs in sows?

A

Anorexia

Weight loss

Reduced milk production

Together with Hyostrongylus - “poor sow syndrome”

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

What are the clinical signs in acute disease?

A

Rise in temperature

Diarrhea

Rapid dehydration

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

What are the clinical signs in chronic disease?

A

Food/water consumption decreases

Diarrhea - putty-like to mucopurulent, green, putrid smelling

Intussusceptions

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

What are the clinical signs in clinical disease?

A

Inappetance

Weight loss

Reduced milk production

Rarely accompanied by diarrhea

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

How do you diagnose?

A

Clinical signs

Egg counts - L3

 - Not in acute disease since not yet patent
 - Present in chronic disease

Necropsy

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

How to treat and prevent?

A

Transmission favored by high egg excretion and humid, unhygienic conditions

Anthelmintics and management

Animals do not develop good immunity to infection

17
Q

Describe treatment and prevention in swine

A

After A. suum, most difficult to control

PPR with farrowing, favoring transmission to offspring

Pericarturient rise - rise in egg shedding just before farrowing to expose
piglets in pasture

18
Q

What is the common name?

A

Nodular worm

Pimply worm

Parasitology Exam 1 May 2015 (41 decks)

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