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Bacteriology > mastitis > Flashcards

mastitis Flashcards

1
Q

streptococcus agalactiae
contagious or environmental mastitis
gram - or +
shape
aerobe or anaerobe
____ pathogen of mammary glands
clinical signs
treatment

A

contagious
gram + cocci chain forming
facultative anaerobe
obligate pathogen of mammary glands
subclinical mastitis
beta-lactams

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2
Q

staphylococcus aureus
contagious or environmental
gram - or +
shape
aerobe or anaerobe
clinical signs
treatment
____ positive

A

contagious
gram + cocci
facultative anaerobe
clinical mastitis
*most common pathogen for clinical mastitis
abx - ceftiofur & pirlimycin
coagulase +

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3
Q

mycoplasma
contagious or environmental
gram - or +
shape
aerobe or anaerobe
clinical signs
treatment

A

contagious
no cell wall
cocci - fried egg
facultative anaerobe
mastitis, pneumonia, swollen joints, head tilts, vulvovaginitis
hard, insensitive to beta-lactams

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4
Q

corynebacterium bovis
contagious or environmental
gram - or +
shape
aerobe or anaerobe
predilection for ____
clinical signs
treatment

A

contagious
gram + rod club shaped
facultative anaerobe
teat canal
mastitis
intramammary abx therapy

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5
Q

what bacteria is the most common for causing clinical mastitis in small ruminants

A

staphylococcus aureus

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6
Q

which contagious mastitis pathogens are highly contagious

A

mycoplasma
corneybacterium bovis

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7
Q

diagnostics for mastitis

A

CA mastitis test

culture with blood or MacConkey Agar, aerobic

PCR

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8
Q

streptococcus uberis & streptococcus dysgalactiae
contagious or environmental
gram - or +
shape
aerobe or anaerobe
clinical signs

A

environmental
gram + cocci
facultative anaerobe
subclinical mastitis

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9
Q

coagulse negative staphlylococcus
contagious or environmental
gram - or +
shape
clinical signs
diagnostics

A

environmental
gram + cocci
subclinical mastitis
culture

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10
Q

trueperella pyogenes
contagious or environmental
gram - or +
shape
aerobe or anaerobe
clinical signs
treatment

A

environmental
gram + pleomorphic rod
facultative anaerobe
summer mastitis, metritis, foot rot, pneumonia
affected quarters amputated

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11
Q

E.coli, Klebsiella, Enterbacter, Serratia
contagious or environmental
gram - or +
shape
aerobe or anaerobe
virulence factors
clinical signs
treatment

A

environmental
gram - rods
facultative anaerobes
endotoxins from LPS –> inflam
coliform mastitis
systemic abx NOT intramammary

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12
Q

SCC in infected quarter
SCC in uninfected quarter

A

infected >100,000 SCC
uninfected <100,000 SCC

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13
Q

quarter method

A

individual affected quarter
pathogen identification

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14
Q

composite method

A

multiple quarters in one sample
contagious pathogens
not recommended for identifying quarter infections

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15
Q

bulk tank method

A

standard plate count
BTSCC < 250,000
tests for coliforms

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16
Q

CA Mastitis Test

A

one well per quarter
scored as negative, trace, 1, 2, 3

17
Q

CMT
score: negative

A

no infection, healthy
SCC < 200,000

18
Q

CMT
score: trace

A

possible infection
SCC 200-400k
subclinical mastitis

19
Q

CMT
score: 1

A

infected, sub-clinical mastitis
SCC 400k-1.2 million

20
Q

CMT
score: 2

A

infected, clinical mastitis
SCC 1.2-5 million

21
Q

CMT
score: 3

A

infected, clinical mastitis
SCC >5 million

Bacteriology (16 decks)

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