Listeria, Nocardia & Dermatophilus

Question 1

Where to find Listeria

Answer 1

widespread, soil, sewage, plants, silage, gut, food can replicate in the environment

Question 2

Where to find Nocardia

Answer 2

soil

Question 3

Where to find Dermatophilus

Answer 3

soil, skin

Question 4

Describe morph of Listeria

Answer 4

short thick rod 1-2 microm

Question 5

Are listeria capsulated

Answer 5

No

Question 6

Are listeria flagellated

Answer 6

Yes

Question 7

When are flagellae expressed in Listeria

Answer 7

@ Room temp

Question 8

Resistance of L

Answer 8

can survive long given the right pH

Question 9

Culture of L

Answer 9

Simple, haemolysis

Question 10

O2 in L

Answer 10

fac. anaerobs

Question 11

Since they’re motile Bb what can one use as selective method

Answer 11

U-tube

Question 12

C O

Answer 12

Catalase+

Oxidase -

Question 13

O/F test

Answer 13

fermentative

Question 14

Pathogenicity of L

Answer 14

fac path

Question 15

Culture on N

Answer 15

obl aerobic, prod pigments and aerial filaments (come out of colonies)

Question 16

Morph of N

Answer 16

long branched filaments, wrinkled colonies

Question 17

N flagellated

Answer 17

nah

Question 18

D flagellated

Answer 18

nope

Question 19

Species of N

Answer 19

N.asteroides

Question 20

Species of D

Answer 20

D.congolensis

Question 21

What does D.congolensis cause

Answer 21

dermatitis

Question 22

What does N.asteroides cause

Answer 22

Ru: suppuration, mastitis Ca:nocardiosis

Question 23

Name the species of L

Answer 23

L. monocytogenes
L.ivanovii
L.innocua

Question 24

Encephalitis of Ru,ru is caused by which Bb

Answer 24

L.monocytogenes

Question 25

Abortion in Ru, ru is caused by which Bb

Answer 25

L.monocytogenes, L.ivanovii

Question 26

L. monocytogenes also causes what disease in non-ruminants

Answer 26

abortion, septicaemia, encephalitis in Ca,Fe,Eq,Su,Av,Ho