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Microbiology > Lecture 35: Treponema, Brachyspira, Actinobacillus and PANSF Bacteria > Flashcards

Lecture 35: Treponema, Brachyspira, Actinobacillus and PANSF Bacteria Flashcards

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Biology 101 flashcards
1
Q

Treponema is a gram ___, ___

A

Negative, spirochete

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2
Q

Treponema require ___culture for growth

A

Live cell

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3
Q

What does T. Phagedenis, T. Vincent II, and T. Denticola cause in cattle

A

Digital dermatitis

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4
Q

What does T. Paraluiscuniculi cause in rabbits

A

Vent disease

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5
Q

Most causes of digital dermatitis in cattle are multifactorial involving __ and __ causes

A

Environmental and infectious

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6
Q

What are some clinical signs of bovine digital dermatitis

A

Painful interdigital inflammatory lesions, proliferation dermatitis on heel bulbs, lameness, erosive and verrucose forms

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7
Q

What is the most common foot disease in mature dairy cattle and what is cause

A

Bovine digital dermatitis
Cause: treponema spp

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8
Q

What is the cause of contagious ovine digital dermatitis

A

Treponema spp

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9
Q

What are some signs of contagious ovine digital dermatitis

A

Severe lameness on single digit on single foot, ulcerative lesions at junction of coronary band and hoof wall

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10
Q

What is the most common sign of treponema associated hoof disease of elk

A

Lameness

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11
Q

How is digital dermatitis caused by treponema spp transmitted

A

Muddy, moist areas contaminated with feces

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12
Q

Vent disease is a ___disease specific to rabbits

A

Venereal disease

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13
Q

What are some signs of vent disease

A

Vesicles, ulcers covered with heavy scabs mostly around genital region, eyelids and lips

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14
Q

What is the best way to do all treponema spp

A

PCR

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15
Q

What is treatment for digital dermatitis

A
  1. Tetracyclines +/- lincomycin
  2. Regular foot baths and clean environment
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16
Q

What is tx for vent disease

A

Penicillins, restrict breeding

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17
Q

What species causes swine dysentery

A

Brachyspira

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18
Q

What does Brachyspira specifically cause and in who

A

Mucohemorrhagic colitis affecting grower and finisher pigs

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19
Q

Where does Brachyspira proliferation occur in pigs

A

Large intestine

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20
Q

Bracyspira causes hypersecretion of ___ and inability to __

A

Mucous, inability to resort fluids

21
Q

What are some signs of swine dysentery caused by Brachyspira spp

A

Mucohemorrhagic diarrhea, perinanal staining with blood, lesions in LI

22
Q

How is Brachyspira transmitted

A

Recovered carrier pigs, fomites

23
Q

What is the best way to do Brachyspira

A

Culture/PCR

24
Q

What hemolysis does Brachyspira have

A

B-hemolysis

25
Q

What is tx for Brachyspira causing swine dysentery

A

Tiamulin +/- lincomycin

26
Q

How do you control Brachyspira causing swine dysentery

A

Treat or cull carriers

27
Q

Which bacteria species has a morse code appearance under microscope

A

Actinobacillus spp

28
Q

Actinobacillus is a commensal present on most ___

A

Mucous membranes of URT and oral cavity

29
Q

What does Actinobacillus lignieresii cause in cattle

A

Wooden tongue

30
Q

Cow tongue appears painful and hardened, what is likely cause

A

Actinobacillus lignieresii

31
Q

What does Actinobacillus pleuropneumonia cause in swine

A

Necrotizing fibrohemorrhagic pneumonia

32
Q

What does Actinobacillus equulicause in foals

A

Sleepy foal disease, neonatal septicemia

33
Q

What gross lesions are seen in the kidney of horse infected with Actinobacillus equuli

A

Serosal petichiae, suppuration foci

34
Q

What does Actinobacillus suits cause in swine

A

Septicemia, meningitis

35
Q

How do you dx Actinobacillus

A

Culture, direct microscopy of impression smears

36
Q

What is tx for wooden tongue

A

Sodium iodide injection or potassium iodide PO + penicillin

37
Q

How do you tx Actinobacillus pleuropneumonia

A

Prophylactic antibiotics- tiamulin, tilmicosin

38
Q

How do you tx sleepy foal disease- Actinobacillus equuli

A

Colostrum, blood transfusion, antibiotics

39
Q

What two bacteria are part of pathogenic anaerobic non-spore forming bacteria (PANSF)

A
  1. Fusobacterium necrophorum
  2. Dichelobacter
40
Q

What are F. Necrophorum and dichelobacter often involved in

A

Foot rot and interdigital dermatitis

41
Q

PANSF bacteria are ___infection

A

Opportunistic

42
Q

Most PANSF infections are ___ with other bacteria ad parasites

A

Mixed

43
Q

What does fusobacterium necrophorus cause in cattle

A
  1. Liver abscess
  2. Diptheria/necrotic pharyngitis/ laryngitis in calves
  3. Hoof lesions in adults
44
Q

Fusobacterium necrophorum may synergize with __ in foot rot

A

Dichelobacter nodosus

45
Q

What does fusobacterium necrophorum cause in pigs

A

Necrotic rhinitis “bull nose”

46
Q

How do you differentiate necrotic rhinitis from atrophic rhinitis

A

Necrotic rhinitis has pronounced bulging, foul smell and nasal discharge

47
Q

Fusobacterium necrophorum causes ___in sheep

A

Interdigital dermatitis

48
Q

What does dichelobacter nodosus cause in sheet

A

Footrot

49
Q

What does dichelobacter nodosus cause in cattle

A

Interdigital dermatitis, heel erosions, and foot rot

Microbiology (31 decks)

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