Asporogenous gram positive rods

Question 1

Corynebactrium

Answer 1

Family: Coryneform
Palisades (look like Chinese letters)
Facultative anaerobe

Question 2

Corynbacterium renale

Answer 2

normal in lower GI and urinary tract
pyelonephritis in cows
cystitisin cows
ureteritis in cows
kidney abscesses in swine

Question 3

Corynebacterium pseudotuberculosis

Answer 3

normal in soil, skin, and mucous membranes
lymphadenitis in sheep and horses
abortion in ewes
chest abscesses in horses

Question 4

Corynebacterium bovis

Answer 4

normal on bovine udder

occasionally causes bovine mastitis

Question 5

Corynebacterium kutscheri

Answer 5

infrequent cause of tuberculosis like disease in mice and rats

Question 6

Corynebacterium minutissimum

Answer 6

found in docking wounds in lambs

Question 7

Corynebacterium ulcerans

Answer 7

occasionally cause of bovine mastitis

Question 8

Corynebacterium diptheriae

Answer 8

non pathogenic to animals

can cause respiratory issues

Question 9

Corynebacterium suis

Answer 9

Cystitis and pyelonephritis in pigs

Question 10

Rhodococcus equi

Answer 10

Family: Nocardiaceae
single palisade
Coccobacillus
non motile
normal in horse intestines and soil
lung infection in foals
leads to pneumonia and lung abscesses

Question 11

Erysipelothrix

Answer 11

Family: Unknown
may be pleomorphic
facultative anaerobe
Catalase negative
Non-motile

Question 12

Erysipelothirx rhusiopathiae

Answer 12

effects swine, uncommon due to vaccination
three forms:
-acute: septicemia, high mortality, loss of appetite
-Skin or urticarial: also affects poultry, dark purple/red areas on skin, shape of diamond, raised
-chronic: after other forms, older animals, endocarditis and arthritis
erysipeloid is human form***

Question 13

Erysipelothrix tonsillarium

Answer 13

non pathogenic

found in tonsils of swine

Question 14

Listeria

Answer 14

Family: Unkown
pleomorphic and filamentous
facultative anaerobe
Motile
Catalase positive

Question 15

Listeria monocytogenes

Answer 15

found in soil, feces, and decaying matter (silage)
likes alkaline pH
Listeriosis in animals and man
2 forms:
-Neural form: ruminants, micro-abscesses of brain and meninges. “circling disease”
-Visceral form: rabbits, guinea pigs, swine, liver necrosis. transmitted by ingestion

Question 16

Listeria ivanovii

Answer 16

Abortion in sheep

Question 17

Acitnomyces

Answer 17

Family: Actinomycetaceae
slow growing (4-6 days)
obligate or facultative anaerobes
may resemble fungi
catalase negative
sugar fermentation

Question 18

Actinomyces bovis

Answer 18

lumpy jaw in cattle (infection in lower jaw and tongue)
specimen from pus in abscesses
fistulous withers in horses (bursitis near withers)
sensitive to penicillin

Question 19

Actinomyces israelii

Answer 19

actinomycosis in man

Question 20

Actinomyces viscous

Answer 20

can grow in oxygen and weak positive catalse

local abscesses in skin seen in canines.

Question 21

Actinomyces pyogenes

Answer 21

can grow in oxygen
pus producing pathogen in cattle, sheep, and swine
can cause mastitis, pneumonia, and arthritis